What challenges does the United States face in the future?

Some things America could face in the Future is low economic cost. Not only are we supplying a lot of money and people on welfare but we are also spending billions on immigrants and bill policies. We will also see over population in America. Not only are we giving homes to 300 million people but also animals. The more people that come into America the more animals we lose because of inhabitations. Those are some things America will be challenged with.

Explanation:

your answer would be just capitalism.

1. darius the great     persia  

2. piankhi       nubia

3. ezana       aksum

4.     nebuchadnezzar     babylonia

5. shalmaneser iii     assyria