What was Andrew Jackson most significant achievement and why?

Andrew Jackson was appointed colonel of Tennessee militia in 1801 and major general the following year. He successfully commanded the U.S. forces in the regional conflict known as the Creek War, which was majorly fought between U.S. state militias and the Red Sticks Creek people, a traditionalist faction of Native Americans in the southeast. The Creek War is considered a part of the War of 1812 between the United States and Great Britain as the Red Sticks were supported by the British. Andrew Jackson’s victory at the Battle of Horseshoe Bend in 1814 effectively ended the Creek War.

Explanation:

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Andrew Jackson had successfully led the U.S. forces in the Creek War against Native Americans. He served as the seventh President of U.S. from 1829 to 1837. He was also the main founder of the modern Democratic Party.

Explanation:

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.