Restricted and transported ethnic Japanese Americans.
Answer:
Well, We had to make the Louisiana Purchase witch was what we bought from France and then we explored all of that land, and Spain was not friendly witch lead to the Spanish american war and we ended up winning and getting more land from that.
HOPE THIS HELPS AND GIVES YOU MORE OF AN IDEA
1) having more things to supply for your land that you can’t have/make where you live. (Not sure if this is right. Pls check)