The correct answers are in this order:
1. the Great Plains;
2. acquire;
3. profit;
Lots of people were heading west after the safety issues were resolved. The government issued some measures that were very motivational, like the granting of big pieces of land for free, or for very low price. And by lots of people that was seen as a great new opportunity in life, and they rushed in to settle in the fertile Great Plains, get hold on as much land as they could, and become big landowners that could make a solid profit.
