Q.1 What was the era or time to the Advent of Islam?

I could not get your question. would you mind to explain your question again?

aoa i think the question is about the time of the advent of Islam.it was 575 AD....other respected members may confirm
regards

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@CSS_Aspirant

It was Jahiliya Period.

@Kawish

It was 610 A.D when the Holy Prophet PBUH received the first Divine Revelation.

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You mean that was the illiteracy period before 610 A.D? How can we authenticate it that 610 A.D is the starting time of Islam as well as to determine the time of first revelation unto Prophet Muhammad (P.B.U.H)? And second question comes in mind that if we count the previous period of 610 A.D as Illiteracy Period then what about the worth of 1 lac 24 thousand prophets???

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Khudi ko kar buland itna ke har taqder se pehle
Khuda bande se ye poche bata teri raza kia hai
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Dear as far as your first Q is concern, Read history of
Urwah ibn Zubayr, Al-Zuhri
Ibn Ishaq - Sirah Rasul Allah (The Life of the Apostle of God)
Abi Mikhnaf - Maqtal al-Husayn and many many more.

Ayam e jahliyat are considered usually 100 years before start of islam in Arab.

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The most difficult thing in the world is to know how to do a thing and to watch somebody else doing it wrong, without comment

advent of Islam in Arab?
it is 610 A.D

rise of islam and islamic expansion period starts from 630 A.D after conquest of makkah

that period is know as middle ages in europe and byzantine also




Source
http://www.princeton.edu/~batke/itl/scroll/scrollall.html

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Question: What was the era or time-line of Advent of Islam?
Answer:
Now, the answer of my question is as reproduced below from the link provided by DeadlyDoctor;

I.

602 End of the Lakhmids of al-Hira.
610 Arab tribes defeated an Arab-Persian army at Dhu Qar in Iraq.


II. Muhammad (PBUH)

610 Muhammad (PBUH) experiences the first revelation and appears in Mecca as the Prophet of Islam.
613 Beginning of public preaching.
615 Emigration of a group of Muslims to Abyssinia.
616-19 Boycott of the Quraysh against Muhammad's clan (the Banu Hashim).
620-22 Members of the Aws and Khazraj tribes of Yathrib (Medina) converted to Islam and negotiated with Muhammad (PBUH) with the aim of making him leader of their strife-ridden tribal community.
622 The Hijra: emigration of Muhammad (PBUH) and his followers to Yathrib (now: Madinat al-Nabi, "the city of the Prophet," or simply, al-Madina). Foundation of the first Islamic community; social and economic reforms. Starting point of the Islamic calendar.
624 Expedition of Badr: victory of the Muslims over the Quraysh of Mecca.
625 Defeat of Muhammad (PBUH) by the Meccans at the mountain of Uhud. Expulsion of the Jewish tribe of the Banu Nadir.
626 Expedition to Dumat al-Jandal against tribes in the Syrian border area.
627 Unsuccessful siege of Medina by the Quraysh (the, Battle of the Trench," al-Khandaq. Destruction of the Jewish Banu Qurayza. Subjugation of the Bani Kalb at Dumat al-Jandal.
628 Treaty of Hudaybiyya opens access to the shrine of Mecca to the Muslims (first pilgrimage 629). Conquest of the Jewish oasis, Khaybar.
629 Unsuccessful expedition against Byzantine territory (Mu'ta).
630 Bloodless conquest of Mecca.
630-32 Subjugation of the tnbes of the Arabian peninsula. Battle of Hunayn. Siege of al-Ta'if. Campaign against the Ghassanids, vassals of Byzantium, atTabuk.
632 Farewell pilgrimage and death of the Prophet Muhammad.
III. The Caliphate until the End of the Umayyads
(a ) The period of the orthodox' caliphs. The emergence of the Arab state.
632-34 Widespread tribal rebellion on the death of Muhammad. Abu Bakr, the first caliph (khalifa) reimposes the authority of the Islamic government throughout Arabia and sends Arab armies of conquest against Mesopotamia and Syria.
633 Conquest of southern Mesopotamia.
634 Victory against the Byzantines in Palestine (Ajnadayn).
634-44 The caliphate of 'Umar ibn al-Khattab. The Muslims subjugate Egypt, Palestine, Syria, Mesopotamia and Persia. Garrisons established in the conquered lands, and the Muslim rulers begin to take control of financial organisation.
635 Damascus submits to the Muslims.
636 Defeat of a powerful Byzantine army (Yarmuk River) delivers Syria to the Muslims. Muslims occupy Damascus.
636 (?) The Arabs under Sa'd ibn Abi Waqqas defeat a Sasanian army in the battle of Qadisiyya (near Hira), gaining Iraq west of the Tigris. A second victory follows at Jalula, near Ctesiphon.
638 Council of Jabiya (Syria): 'Umar confers with the Prophet's companions on the division and organisation of the domains acquired in the conquests; thereafter the setting up of the Diwan (army lists) that become the basis of pensions around 640.
Conquest of Jerusalem.

The garrison towns of Basra (founded 635) and Kufa become centers for the military government of Iraq, and the starting point for further campaigns of conquest east and north.
639-42 Conquest of Egypt (642 taking of Alexandria) by 'Amr ibn al-'As. Taking of the sea port of Caesarea in Palestine - end of the Byzantine presence in Syria.
640-42 Conquest of Persia (640 Khuzistan; 641 decisive battle of Nihavand in the Zagros).
641 Conquest of Mosul (upper Mesopotamia) and of Babylon in Egypt (Arab garrison, Fustat, established south of the future Cairo).
642 Conquest of Alexandria. Campaign to Barqa (Tripolitania, 642-43)
643 Campaigns to the coast of Makran and southeast Iran.
644-56 Murder of the Caliph 'Umar (644). Caliphate of 'Uthman. Continuation of the conquests in north and east Iran and North Africa. Inter-tribal conflicts within the Islamic state over who will rule. from 645 Beginnings of Arab sea-power, directed against Byzantium.
645-6 Alexandria reconquered by the Byzantines, retaken by the Muslims.
647 Conquest of Tripolitania. First Arab campaigns in North Africa.
649 Beginning of war at sea against Byzantium and the conquest of Cyprus.
649 - 50 Conquest of Persepolis, the capital of south central Iran (Fars) and center of Zoroastrianism.
Yazdagird III, the last Sasanian king, is murdered on his retreat to Khurasan.
Subjugation of Armenia. The Byzantine fleet is pushed back before Alexandria. Attack on Sicilian harbours. Conclusion of a treaty with Nubia. 'Uthman authorises collection and official establishment of the text of the Koran (already begun under Umar).
Muslim sea-power destroys the Byzantine fleet before Asia Minor.
656 Murder of 'Uthman by opponents of his financial and administrative policies.
656-6 Caliphate of 'Ali, cousin and son-in-law of the Prophet; seat of government in Kufa. Civil war between the party (shi'a) of 'Ali and his opponents from among the Quraysh.
656 Ali victorious in the "Battle of the Camel" at Basra over political opponents (Talha, Zubayr, 'A'isha).
657 Battle of Siffin between 'Ali and Mu'awiya.
658 'Adruh arbitrates between 'Ali and Mu'awiya, and refuses to pronounce 'Ali legitimate caliph. Syrian troops proclaim Mu'awiya caliph. Protest in 'Ali's camp against arbitration decision and departure' from Kufa: party of Kharijites (Khawarij) defeated by Ali at Nahrawan, but spread among Arab Bedouins and settled tribes. Growing danger through social tensions in Iraq.
661 Murder of Ali by Kharijites - his son Hasan renounces claims to the caliphate.
Beginning of the rule of the Arab Umayyad dynasty which retains caliphate until defeated by Abbasids in 750.
(b) The caliphate of the Umayyads
661-80 Caliphate of the Umayyad Mu'awiya ibn Abi Sufyan, a kinsman of the caliph Uthman, and the first great caliph of the dynasty. Damascus becomes the new capital. Mu'awiya's caliphate begins the second major period of expansion.
662-75 Ziyad ibn Abihi governor in Iraq (Basra) and governor of the former Sasanian provinces.
667 The Arabs occupy Chalcedon, threaten Byzantium and take Sicily.
670 Beginning of operations against the Berbers and of the conquest of North Africa by 'Uqba ibn Nafi'. Foundation of Qayrawan (Kairouan).
672 Beginning of the 'seven year' Arab siege of Constantinople.
680-83 Caliphate of Yazid I, son of Mu'awiya.
680 Husayn ibn 'Ali leads the uprising of the 'Alid party in Kufa and is killed at Karbala. His martyrdom makes him a central figure for the Shi'a.
683-92 The second civil war. After the death of Yazid I (683-84), Mu'awiya II 'Abdallah ibn al-Zubayr sets up an anti-caliphate in the Hijaz. In Kufa Mukhtar tries to set up the authority of the 'Alids. During his brief caliphate, Marwan I (684-5) regain Syria for the Umayyads at the battle of Marj Rahit (684), and 'Abd al-Malik (685-7), Marwan's son, re-establishes control over all Islamic provinces.
685-87 Religious and socially motivated uprising of the Shi'a under Mukhtar in Iraq in the name of the 'Alid Muhammad ibn al-Hanafiyya.
685-705 Caliphate of 'Abd al-Malik, the second great Umayyad caliph. Period of far-reaching administrative reforms.
691 Mus'ab ibn al-Zubayr, the brother of the pretender 'Abdallah ibn al-Zubayr and his governor in Iraq, murdered. 'Abd al-Malik conquers Iraq.
692 Capture of Mecca by al-Hajjaj ibn Yusuf. End of the anti-caliphate of 'Abdallah ibn al-Zubayr.
694-714 Al-Hajjaj ibn Yusuf, governor in Iraq, pacifies the province disturbed by sectarian uprisings and revolts. Administrative and economic reorganization. Final removal of the Byzantines from Carthage. Monetary reform: replacement of Sasanian and Byzantine coinages by coins with Arab-Islamic legend. Introduction of Arabic as language of government. Revolt of Ibn al-Ash'ath in Southern Persia and in Iraq. Rebuilding of the church of St John in Damascus and transformation into the Umayyad mosque.


The second question was what about the worth of 1 lac 24 thousand prophets before 610 A.D? It's answer is that all these prophets were descended, as per time to time basis, with very limited knowledge to teach/educate the then respective people in each walk of life concerning matters. Thanks!

__________________
.-"-._,-'_`-._,-'_`-._,-'_`-._,-'_`-,_,-'_`-,_,-'_`-,.
Khudi ko kar buland itna ke har taqder se pehle
Khuda bande se ye poche bata teri raza kia hai
`-' `-._,-'-._,-' `-._,-' `-._,-' `-._,-' `-._,-' `-.-' .