All of the following are major types of borders that define the international system except?

Between 6000-4000 B.C

A) the Egyptians started primitive trading networks. B) the Sumerians created one of the strongest empires in history. C) the Babylonians and Egyptians flourished and lived in complex, stable societies. D) humans only had polished stone tools.

Most Americans pay only scant attention to debates in Congress, the details of particular issues, or even lively campaign debates

Indicate whether the statement is true or false