Final answer:
Martin Van Buren's accomplishments include creating the Democratic Party, implementing the Independent Treasury Act of 1840, and supporting the Indian Removal Act of 1830.
Step-by-step explanation:
Martin Van Buren, an upstate New York lawyer and politician, had several significant accomplishments throughout his political career.
One of his accomplishments was his role in developing the Democratic Party. Van Buren was instrumental in creating the party and served as its leader. He also advised President Andrew Jackson on various issues.
Another major accomplishment was the implementation of the Independent Treasury Act of 1840. This act established an independent treasury system that separated the federal government from private banks and helped stabilize the nation's economy.
Furthermore, Van Buren's support for the Indian Removal Act of 1830 led to the forced relocation of Native American tribes.