Panic of 1837:

When the national bank closed, the people got confused and scared, and a economic depression started.

Seminole War:

In Florida, the Seminole Indians were fighting a costly war with the U.S, only increasing the depression.

Annexation of Texas:

Van Buren blocked Texas being annexed.

Martin Van Buren

Characteristic:

Unstable

The country's economic state was not the only unstable thing. With the Seminole war going on, Florida was unstable too.