It was useful because it was one of the first forms of writing.
B because during the 1200s and 1300s, the Mongol took over most of Afro-Eurasia. It was unexpected because they were a nomadic group.
A is wrong because serfdom implies the feudal system only seen in Europe and Feudal Japan.
C is wrong because the European Crusaders pretty lost every Crusade to the Muslims. The outcome of the Crusades were Europe's increased interest in Islamic goods.
D is wrong because the Byzantine Christians didn't do the Crusades, the Holy Roman Empire did.
Answer:
Because they were usually close to the U.S or the soviets, or they had a president or a king that supported communism when a touching hated communism
Explanation:
brainiest plz
<h2>A. Abu Bakrؓ</h2>
The first leader of the Muslim community after Muhammad صلى الله عليه وسلم had died was Abu Bakrؓ, who became the first caliph of the Muslim community.
Among the first converts to Islam, Abu Bakrؓ generously supported Muhammad's work. During Muhammad's migration to Medina, he was one of his closest companions. In addition to this, he participated in a number of wars, such as the battles of Badr and Uhud, during his reign.
<em>Hope this helps :)</em>
Well, Charles Goodyear devoted his whole life to the v<span>ulcanization of rubber.</span>
