Jefferson was the first president to be inaugurated in Washington, D.C.
The Supreme Court ruled in Marbury v. Madison that any law passed by Congress can be declared unconstitutional by the courts.
The Louisiana Territory was purchased from France for $15 million dollars. The price works out to three cents per acre for the 512 million acres.
Meriwether Lewis and William Clark began their exploration of the Northwest. Bears brought back from the expedition were displayed in cages on the White House lawn. For years, the White House was sometimes referred to as the President’s bear garden.
In 1808, slave importation was outlawed. Yet, another quarter of a million slaves were brought into the United States by 1860.