Answer:
uhh, I'll try to help the best I can but basically I think the awnser is that other foreigners wanted to take our land? sorry! that's all I got!
Naturalization is the term to describe the process of becoming a citizen of the United States.
It could be argued that the characteristic that is the most important for development of a civilization is "food production," since having a surplus of food allows people who are not farmers to develop new skills and trades.
En Carolina del Norte, y sus modelos en el túnel de viento que habían construido en su taller en Dayton.