what to do about Russian control of the pacific coast
You could be referring to Missouri in 1819/20 or California in 1850.
Mostly political. The Federalist party lost power and there was only one strong political party, the Democratic-Republicans. However, slavery was still an issue and the financial Panic of 1819 profoundly impacted American citizens.
The political balance between slave and free states as of 1819 was disturbed by the territory of Missouri's petition for admission to the Union as a slave state.
Missouri
political parties
Missouri
In 1819, the 11 free states in the United States were Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut, New York, New Jersey, Pennsylvania, Ohio, and Indiana. These states did not permit slavery, contrasting with the slave states that allowed it. The issue of slavery was a significant factor in the political landscape of the time, leading to tensions that would eventually contribute to the Civil War.
1819 = 1819/1 or 18190/10, for example.
Became issues that aroused the common people to political action and fueled the New Democracy.
After 1819-1901 vs 14th -17th centuries.
Yes, Florida used to be one of Spain's colonies, but it was acquired by the US in 1819.