<span>The most important motivation for American imperialism is cultural. The American identity is a very unique and specific one. Americans believe that their lifestyle is the most superior and that they often have the best solution for all tasks. American imperialism strove to spread this doctrine into its colonies.</span>
Sunnis believe that the successor of Muhammad needed to have a direct blood lineage (be a close relative) of Muhammad. Shias believe in election of the most qualified leader regardless of relationship to Muhammad.
Because they were the country that had the most powerful weapons. (Nuclear Bombs)
I believe it was because they wanted to rule more land.
Yes, with increasing hatred between many countries and advanced weaponry, it could cause a disastrous world war. World War 3 would mostly start with the USA and North Korea.
