The Republican Party emerged in 1854 to combat the Kansas–Nebraska Act and the expansion of slavery into American territories. The early Republican Party consisted of African-Americans, northern white Protestants, businessmen, professionals, factory workers, and farmers.
1) The first and main reason America entered WW2 because of the "Zimmerman telegram," intercepted by the British, in which Germany floated the idea of an alliance with Mexico.
2) In May 1915, a German U-boat sunk the British passenger ship Lusitania off the coast of Ireland. Over 1,000 passengers were killed, including 128 Americans after it was sunken by the Germans.
3) Germany turned to unrestricted submarine warfare to keep goods from reaching Britain.
This statement is wrong.
The second part of the sentence is actually correct - the one describing what ziggurats are. However, the first part is incorrect - Sumerians were not monotheists. Monotheists believe in one god - for example, Christianity is a monotheistic religion. But Sumerians were polytheists - this means that they believed in many gods, such as Enlil, Enki, Nergal, etc.
In the 1800s they used steel plows and other new forms of technology. The Steel Plow was used for farming to break up tough soil without soil getting stuck to it.