After WW2 Germany was devided into 2 countries
In the United States, the three main factors that make up the system of checks and balances would be the Executive Branch, the Legislative Branch, and the Judicial Branch, since the goal is to separate these powers so that no single power becomes too powerful.
The Louisiana Purchase and the Lewis & Clark Expedition and its “Sea-coasts, or Inland Countries; Course and Junctions of Rivers and First, Jefferson was eager to push western exploration and American claims It is also questionable how firmly the expedition reinforced the nation's claim to the Oregon territory.
THE answer is C.