In Louisiana Purchase and Territorial Period, published September 17th, 2014 by Louisiana Endowment for the Humanities, the author Peter J. Kastor claims the period from 1803 to 1812 was a landmark in Louisiana history. Peter J. Kastor provides the following arguments: social unrest, radical revolt, and international conflict occurred in Louisiana. The Louisiana Purchase brought upon many situations regarding territory, ethnic groups, and revolts to the people. When France gave up land in North America to the Americans, the struggle of governing the new territory was brought upon Thomas Jefferson. This new territory meant he now must govern more territory and more people. With more territory, there was more people of various ethnic groups