Answer:
Alaska- Purchase
Step-by-step explanation:
Alaska was purchased in 1867, during the presidency of Andrew Johnson.
The Russian Empire, at the time ruled by czar Alexander II, was interested in selling the land because of three reasons:
- Very few Russians ever settled in Alaska
- The Empire was in poor financial situation after losing the Crimean War
- Alexader II believed that he would not be able to defend Alaska from a future invasion.
Because of these three reasons, the purcahase was completed in a brief period of time, and the US Senate approved the deal by a wide margin.