If you want good sources go to wikipedia and look at the sources used in the wikipedia article. DO NOT USE THE WIKIPEDIA ARTICLE ITSELF AS A SOURCE!
He ends up back at the starting point because if he walks the same steps forwards and backwards he would be in the same spot
The correct answer is Mexico.
Because of Mexico and their gulf of Mexico, the United States cannot control the entire gulf area. If the area changed hands and went to the United States, they could unite the two gulfs and have a huge control over the land and the ports in the new world. However, that's probably never going to happen so it stays this way for now.
Settlement houses were established so that it would help fight poverty. The settlement houses provided services such as daycare education and healthcare to improve the lives of the poor in these areas.
I think race relations is good because people shouldnt be able to say what color skin someone gotta be to hang out with or ever marry them.