What effect did World War I have on the United States? The country's credibility wavered because of the war's outcome in Europe.
The wartime economy kindled an increase in racial unrest across the country.
The nation became a world leader as a member of the League of Nations.
The country experienced an economic recession due to wartime production.

The country experienced an economic recession due to wartime production.

Explanation:

The post-World War I recession was an economic recession that hit much of the world in the aftermath of World War I. In many nations, especially in North America, economic growth continued and even accelerated during World War I as nations mobilized their economies to fight the war in Europe. After the war ended, the global economy began to *decline.*

Spurred by the nationalism aroused by the Spanish-American War, the United States annexed Hawaii in 1898 at the urging of President William McKinley.

Explanation: