The correct answer is Michael Faraday. Specifically, he invented the electric dynamo, which was later developed further into the power generators we know today.
They gave us new crops such as: beans, squash and maize
The best answer is A. Violent riots were started in several Chinatowns by nativists who were angry and resentful of newcomers. Nativists believes in focusing in the protection of the interests of the native people or the original inhabitants in an area. They are always against newcomers or immigrants.