Congress was split, as the French had helped the young United States during the Revolutionary War, however, many where confused what direction the revolution was going (spoiler alert, the French Revolution traded a monarchy for a dictatorship with Napoleon at the helm - so it didin't accomplish a whole lot).
Although both parties(the Democratic-Republicans and Federalists) had different hopes for the french revolution, they both agreed that war would be economically not possible and would possibly open the U.S up to attack, so the U.S remained neutral.
General Zebulon Montgomery Pike (1779-1813) was a contemporary of Lewis and Clark and he was an early explorer of the territory of Louisiana and the area around the Arkansas and the Red rivers. He also trekked across the Great Plains and the Rocky Mountains, and he published his findings in a book. Pikes Peak, in Colorado, was named in his honor, although he was not able to reach its summit.
Mexican immigrants were using resources and working jobs that belonged to the white americans.
I don’t know if this is right but I am guessing Britain and France