from greek culture and greek ideas
I can name 2: Manuel Comnenus and Alexius Comnenus they were leaders during the first and 2nd crusades
Rome did not have a chief. It was not a chiefdom. During the 1,200 years of her history Rome had three forms of government: a monarchy headed by a king for 244 years, a republic headed by two annually elected consuls for 482 years and rule by emperor for 503 years.
There was a split between two parts of Rome. The Eastern and the Western parts. Thinking about it, there were two emperors when the Roman Empire fell. The emperor for the Eastern part of Rome was Romulus Augustus . And the The emperor for the Western part of Rome was Odoacer.
The reasons for the fall of the Roman empire can loosely be divided into two parts -- corruption and lethargy from within and pressures on the borders from without.
islam
The Ghaznavid Empire existed for two centuries and therefore had a great number of leaders. Probably the most famous and important of them was Mahmud of Ghazni, who expanded the borders of the Ghaznavid Empire to their greatest extent.
the Songhai empire was defeated due to the lack of modern use of weapons by the Songhai military
Two reasons why Songhai fell to the Moroccans were internal instability within the Songhai Empire, which weakened their defense against the Moroccan invasion, and the superior military technology and tactics of the Moroccan forces, particularly their effective use of gunpowder weapons.
Niger and Mali are present-day countries that were part of the Songhai Empire in West Africa during the 15th and 16th centuries. The empire covered a vast area that included these two modern nations.
The Three Great emperors of Songhai were actually Two Great emperors of Songhai, which were Sunni Ali and Askia the Great. You could actually consider Musa another Great emperor of Songhai, since he made his father, Askia the Great, leave the throne because Askia the Great became blind, and Musa reigned after him, and then then empire of Songhai collapsed.
Julius Caesar and his adoptive son, Augustus.
Atahualpa and Huascar Inca leaders quarreled and the Spanish conqueror Fransciso Pizzarro took advantage to ransack the Inca Empire in 1532.
from greek culture and greek ideas
Hoping to expand their empire further, the Mongols launched two naval assaults on Japan, but were thwarted by hurricanes. The Mongol Empire expanded little after the creation of the Yuan Dynasty.
The two factors that made Italy an ideal location were access to trade and a strong military expanded throughout the Mediterranean.
Several different empires continued to spread Islam after the collapse of the Abbassid Caliphate, the last Arab-led Caliphate (prior to the 21st century). Some of these numerous states include: the Ottoman Empire, the Safavid Empire, the Timurid Empire, the Mughal Empire, the numerous Islamic Sultanates in Indonesia (specifically in Sumatra and Java), the Omani Empire and Somali States, the Songhai Empire in central Africa, etc.