Answer:
- Territory
The louisiana purchase basically doubled the size of our country. This allow united states to invite more citizens to migrate to our country and settle on the new land.
- Economic benefits.
The increase in immigrants and large number of natural resources in Louisiana made untied states able to produce a lot more goods than before. This contributed to the expansion of US economy in the long run.
- closer proximity to British and Spanish territory at the same time.
As you can see on the map, the territory is really close to the territory owned by Spanish and British empire.
This means that the new territory can be used as a strategic location to distributes the goods to both Spain and Great Britain. This increased US' target market.