WILL GIVE BRAINLIEST!! What was the most important thing that Thomas Jefferson accomplished as president?

A. Added the British territory of Canada to the us.

B. Added the Spanish territory of Arizona to the US.

C. Added the Oregon territory to the US.

D. Added the Louisiana territory to the US.

the answer is d

Definitely "D" the Louisiana Purchase

Explanation: The Louisiana purchase is the largest form of land out of all of these answers, this land in modern day times is used for a ton of farming and coal mining.

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