1).who purchase louisiana? from whom? 2).what was the man reson to? 3).how did the lousiana purchase impact usa?

1. Thomas Jefferson did the Louisianna purchase. He bought it from the French.
2. The main reason was to expand territory.
3. This impacted the US because it gave a huge chunk of land to them and it also started the Western Expansion.

Hope this helps. :D

I know that the main reason was because the us were trying to create a manifest destiny