The highly organized farmers of the Ohio River Valley were called Mound Builders. They <span>were inhabitants of </span>North America<span> who, during a 5,000-year period, constructed various styles of earthen </span>mounds<span> for religious and ceremonial, burial, and elite residential purposes. </span>
They lacked knowledge about the land and how to use their environment to survive.
Separation of powers ensures a relatively fair government because no branch is given too much power. This system is called a "checks and balances" system, in which each branch relies in part on the others.
B is that he promised to change the world
