Stephen Douglas hoped when pushing the Kansas-Nebraska act that
the everything would be settled democratically, without violence by the settler
that would be impartial but unfortunately this was at the same time the fatal
flaw of the act. People misunderstood the act which led to anger by the
southerners and the subsequent retaliation by the northerners as well as the
creation of two governments in Kansas one that was elected on fraud and other
that was not legal.
They did not want the united states to join the league of nations
As with any system, there will be an expansion of a population that is only halted by the mechanisms of the system being overly stressed and unable to maintain a population over a certain level or threshold. It is natural to fight for resources in a given system. The European population settled and increased, more resources were needed, land, water, food and supplies. The Europeans fought to maintain and increase the people with whom they associated. And unfortunately a prevalent thought at the time, was the Indians were a "savage other", whose lives were not as valuable and so the Europeans eventually destroyed them.
In 1607, 104 English men and boys arrived in North America to start a settlement. On May 13 they picked Jamestown, Virginia for their settlement, which was named after their King, James I. The settlement became the first permanent English settlement in North America.
