What attracted wandering herders to the Tigris-Euphrates Valley, resulting in conquered and newly established empires?

Why did jefferson make the louisiana purchase?

Which statement explains why john adams most likely supported the separation of powers between the branches of the new national government? question 1 options: the work of government would be overwhelming for just one branch. the work of government could be accomplished more quickly by three branches. each branch of government would limit the power of the other two. each branch of government could ignore the decisions made by the other two.

In 1819, what did the united states obtain from spain for $5 million?