What was the most important achievement of the United States in this period

States' compliance with the native american reservation treaties drawn up by the federal government for the native american nations is:

The area directly outside a city is called 1 rural 2 urban 3 suburban

What was a goal of the treaty of versailles? to germany rebuild its industry to build better roads and factories in germany to make sure germany did not invade france in the future to give great britain and the united states credit for their in wwi