Answer:
War, religious persecution, Economic crash
Explanation:
The Irish Migration was largely due to religious persecution and economic decline. War could easily cause a migration for fear of personal safety, we have seen an increase in immigrants from Central America and Syria in recent years. Religious freedom is partially what the US was founded on, it continues to be a life or death issue under ISIS and other organization who use religion as an excuse for violence. Economic crash leads to movement based on new opportunities.
Explanation:
Aztecs engaged in war for two primary reasons: for conquest to reap tribute or to take captives for religious sacrifices necessary to satisfy the gods. We'll discuss the war for captives in another article. War, therefore, was a major part of Aztec society and successful Aztec warriors received high honors.
One factor that helped Buddhism spread to China was the way of the Silk Road.
<u>Non-Arabs were treated as second-class citizens regardless of whether or not they converted to Islam, and this discontent cutting across faiths and ethnicities ultimately led to the Umayyads' overthrow. The Abbasid family claimed to have descended from al-Abbas, an uncle of the Prophet.</u>
