About how long did the Xia dynasty last? The Roman Republic?
billion
Estimate the year that the world population reached 5,000,000.
Take a look at the arrows related to the United States. The first one touches the timeline in about
1776, the year the Thirteen Colonies declared their independence from Britain. The second arrow
does not touch the timeline at all. What might that represent?

answer; /// i believe that the correct answer is (d)the huang he river valley;

in which two ways were the northeast woodland indians and the southeast indians similar? both collaborated to form the iroquois confederacy. both cultivated the crops of corn, beans, and squash. both lived in rich environments of swamps and rivers. both lived in tree-bark dwellings called wigwams. both expected men to hunt, while women farmed.