Soldiers from Thebes, Sparta's ally, tried to seize control of a town called Potidea. Caught and imprisoned, the townspeople put all 200 members of the advanced party to death. A messenger was sent to try and stop the kiling but by time the war had already started
The Kansas-Nebraska Act was passed by the U.S. Congress on May 30, 1854. It allowed people in the territories of Kansas and Nebraska to decide for themselves whether or not to allow slavery within their borders. The Act served to repeal the Missouri Compromise of 1820 which prohibited slavery north of latitude 36°30´.
There are several pieces of evidence that exist that show that Indus Valley civilizations traded with Sumer, but the most significant is in the layers of stone under the ground.