What contribution did Native Americans make to the American military effort?

4. D - Membership in the League could draw the United States into future wars.

5. B - Native American veterans gained U. S. citizenship after the war ended.

6. B - passing of the Espionage Act

13. A - The United States was hit by a brief recession.

14. B - register with the government

15. A - Soldiers experienced increasingly unsanitary conditions, including rat infestations.

16. C - Journalists had an important influence on Americans' attitudes about the war.

18. A - The war gave African Americans new economic opportunities working in war industries.