The framers of the United States Constitution based our federal government on federalism. ... Federalism has evolved over the course of American history. Some important events have shaped the balance between the national and state governments so that federalism best suits the needs of the country at that time.
The Huns. A fierce tribe from Asia that attacked the western empire.
They can be influenced in countless ways
Most notably by the economy and and the social enverment can determine elections.
Most notably how the 60,s and 70, hippy movement influenced elections
The battle of Antietam led to the Emancipation proclamation.