Answer: France
Explanation: Louisiana and much of the UA at the time was purchased in what was called the Louisiana Contract by Thomas a Jefferson from a France. I believe the price was 3 million dollars.
Answer:
C. European diseases killed many people.
Explanation:
The Natives were not immune to diseases that the outsiders brought in to their country, which led to them dying in large amount of numbers.
Yes because one party keeps the other in check