It was 'The Great Migration.'
"The Great Migration<span> was the movement of 6 million African-Americans out of the rural Southern United States to the urban Northeast, Midwest, and West that occurred between 1910 and 1970."</span>
"<span>The British hoped to tighten control over the empire" would be the best option, but the main reason beyond this was that they wanted to discourage trade with other nations, in order to increase profits. </span>
<span>Nativist sentiment was arguably the strongest with potential for violence in America during the 18000's. The county was undergoing a large amount of political change coupled with socio-economic and racial change. Additionally the amount of immigrants and national subcultures that existed strongly resisted change from new groups entering the nation during that time.</span>
Answer:
They thought the the Americans were being cruel to the Native Americans