The "new immigrants" who immigrated to the United States after the Civil War primarily came from all of the following countries except "Poland", since the other three nations from the list were far more prominent.
Isolated
Isolated means far away from everyone or everything else. The hermit who lives on a remote island is isolated from the rest of the world, with nothing but coconuts and fish to keep him company.
The word isolated comes from the Latin word insula, which means island. You don't have to be on a remote island to feel isolated, though. Even people who live in big cities can feel a sense of isolation if they don't have many friends and spend a lot of time alone. In addition to remote or set apart, isolated can mean a single event, or incident. The high school students assured their principal that the cafeteria food fight was an isolated incident, promising that it would never, ever happen again.
A. European imperialist powers gained further control of trade with China.
The correct answer is letter B
In the social sciences, however, modernization is an extremely complex and comprehensive concept, because it encompasses a huge set of transformations taking place in the economic, social and political structure of a nation. The modernization process can occur concurrently or separately in each of the constitutive structures of the social system. Modernization is a continuous process, which even today produces transformations in contemporary societies.