Question

what was the main power given to the war industries board after its creation in 1917?
overseeing the nations armed forces at home and abroad
informing the american public of events related to the war in europe
eliminating any traces of german culture from the united states
setting prices for key war materials such as steel, iron, and rubber

Explanation:

The War Industries Board (WIB) was established during World War I. Its main role was to coordinate the production and distribution of war materials. Setting prices for key war materials like steel, iron, and rubber was a crucial economic - related power. Overseeing armed forces was more of a military command role (not the WIB's main task). Informing the public was more of a propaganda or news - related function (not the WIB). Eliminating German culture was a social - cultural and perhaps xenophobic action (not the WIB's main purpose).

Answer:

setting prices for key war materials such as steel, iron, and rubber