Guys here I would like to write different events of history with the hope that they will help for objective preparation as 20% is objective part. Suggestions would be welcomed I tried my best for accurate facts but if somehow i fail somewhere so please let me know.

(A)- Start and end of different dynasties

1- Umayyad dynasty
*Damascuss as a Capital (dar ul khilafa)
*from 41-132 Hijri and 661-750 AD,
*1st ruler was H. Amir muawiah and last was Marwan II,
*Total number of rulers 14
*Imp events Karbala, Battle of siffin, Battle of Jamal, Rise of khawarij, battle with Ibn e Zubair, Conquest of Spain and Subcontinent

2- Muslims in Spain
*711-716 Ishbilia as a Capital
*716-1106 Cordova (Qurtaba) as a Capital
*1106-1492 Garnata as a capital Son of Yousaf tashqeen of morocco, nasir transferred caliphate to Garnata.
*1st Emir was Abdul rehman al dakhil or I, last was Emir Muhammad XII who surrendered the emirate of Garnata in the favor of Queen Isabella
*Prominent personalities in science, education and technology field
-Zaryab (Abdul rehman II regime), musician, trendsetter, dresser
-Historiographer Ibn e Khallidon, Ibn e Khateeb
-Philosopher Ibn e Rushd Al Maliki he was also a jurist Famous book "Bidayat ul Mujtahid Wa nihayatul Muqtasid, Ibn e Arabi he was a mystic in fact.
*Constructive and Productive rulers were Abdulrehman I, Hisham I, Abdul rehman II, Abdul Rehman III
3-Abbasid Dynasty
*Hashmiya as a Center of Dynasty by abu al abbas al saffah
*Baghdad by Abu jafar Mansoor
*samraa by Muatasim billah 60 mile ulterior to Baghdad city
*1st Al saffah, last Mustasim billah
*Total 37 rulers ruled
*Golden era were of Mansoor, Haroon and Mamoon. first 10 rulers brought prosperity after them decline of the dynasty started

4-Fatamid in Egypt
*Saeed(Abdullah mahdi), was the founder but his son conquered all of Egypt Al muiz, who is considered to be the founder of Fatamid
*341-567H, 953-1171 AD
*Cairo as a Caliphate center
*1st ruler Al muizz, last Al Aazid
*Total # of rulers is 12
*Azhar Uni during the regime of al aziz, Scientific Institute with the name of Dar ul Ilm during Hakam's regime

5-Otthoman Empire
*1219-1924
*1st ruler, Usman in 1299 in fact with whom name the sultanat was established. So it should be considered the starting date but we should know the both and according to question we may chose. last ruler was Muhammad the fifth
*Constantinople as a Capital in 1253, Sultan Muhammad II conquered it.
*Important personalities Sultan Muhammad II (Al Fataih), sultan Suleyman ( the Magnificent)

6-Battle of Crusades (Salibi Jangen)
*1095-1270
*8 battles took place
*In 1st battle 1094, Pope of Rome conquered Jerusalem, 60,000 muslims were brutally murdered,
*2nd battle was won by Noor ud din Zangi who was the governor of Mosal
*3rd battle was fought by Sultan Salah Ud din ayubi which continued for 3 years from 1189-1192
*King of Britain accepted the defeat and surrendered the Jerusalem in the hands of Ayubi, treaty was signed but after that christians tried 5 times more to regain it but all in vain.