Well,
Thomas Jefferson called his election "the Revolution of 1800" because it marked the first time that power in America passed from one party to another.
He promised to govern as he felt the Founders intended, based on decentralized government and trust in the people to make the right decisions for themselves. Basically, the observers have regarded Jefferson's election in 1800 as revolutionary. This may be true in a restrained sense of the word, since the change from Federalist leadership to Republican was entirely legal and bloodless.
It depends on what time period you are referencing with African immigrants. Back in the 1500s, African people came to the Americas because of Slave Trade, but later on, they came to the United States under their own free will. Slave Trade forced African people on ships into the Americas, in which they stayed as slaves or did forced labor in a harsh system.
In the 1900s and later on, African immigrants came to America to seek asylum or safety in the United States because of problems going on in their countries. For example, in Rwanda, in the 1990s, there was some major problems going on such as genocide (mass killing of people) and some people came over to America to escape these hardships.
Also, another way they are different would be their culture that they brought. Their influence of music and African culture was very different as compared to other cultures from Europe.
You did not state a specific time period about which you're interested. However, in general the war-weary Americans were concerned with any event in Europe that seemed to destabilize the whole region. They were concerned with events like these because they had the potential to seriously influence the peace in America, not only in Europe.
I think <span>The axis powers were made up of coalition of countries that opposed the allied powers in World War II </span>