The wast ward expantion affected the geography because of the agiculture and the native americans land being taken away and forced to move.
Monroe Doctrine was the early-19th century announcement that the American continents were not subjects for future colonization by any European country.
The presence of Anglos was the similarity--Anglo (white) people in the regions held economic interests leading to the revolts against the leadership and a demand for annexation.
After the Mexican Revolution, the whites living in Texas, who also were the main ranchers of the region, asked the US to assist in a revolution against Mexico to become independent. The independent nation requested the US to annex the state so the whites could regain connection to the US. During the Mexican-American War, the region of California also staged a revolt against Mexico and declared themselves a free republic called the Bear Flag Republic. The white settlers in the region assisted the US with the war and after became part of US territory. This is the same as Hawaii, white land owners and farmers asked the US to assist in a revolt and eventual annexation of the islands. This put whites in power in Hawaii to control the territory.
Because in a Spartan's world, hazing and fighting was encouraged. Also because a surrender in battle was a MAJOR disgrace, so they made sure to always be prepared for a fight and watch their backs.
It was Egypt's largest temple and was lavishly decorated.
Hope this helps. :D