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>
His killer wanted to unite all Serbs under one government not Austria.The Austrians wanted to punish Serbia plus the alliance system pulled one nation after another into the war.
Northerners opposed the act because they thought it was a plot to turn this land into slave states.
