They signed an agreement with China
In the Eastern U.S. they have
mountains(Appalachian),
fall lines ( Atlantic Seaboard Fall Line),
and coastal plains (Atlantic Coastal Plain).
There are not any deserts in the Eastern U.S. those are found in the Southwest and Western U.S.
Athens was a direct democracy in which citizens voted on laws themselves. There are similarities and differences between Athenian democracy and that of the United States. In a democracy, the citizens make decisions. But the difference between the democracy of Athens and U.S. democracy today is that in Athens the people directly made the laws themselves.
Least developed countries (LDC) have hard time connecting with other countries and therefore struggles a lot.