United States did not like communism in the 50's and 60's. So they fought proxy wars with the U.S.S.R., now dissolved in to different countries.<span />
Limited government is the answer
Ibn Battuta praises the people for their genuine zealous devotion to their religion. We know that the Mali Empire had multiple rulers who for the most part were Muslim; some rulers were more devoted than others.
There are three major reasons why people immigrate to other countries: work, love and war. In the late 1800s, immigrants in the United States tried to assimilate with the current populations by learning to speak English and adopting current American cultures and traditions. This is known as the process of Americanization. The idea is that immigrants end up sharing the "American" values, customs and beliefs. The idea behind Americanization is that people who share common values and ideals will contribute to a common cause or goal. This is also known as patriotism.
there are plenty.
if you are looking for something from way back, there was the tea act and it put taxes on tea and the colonists from Boston boarded british ships and dumped the tea into the ocean, otherwise known as the Boston tea party.