How did the Allies' "Europe first strategy affect events in the Pacific in the first half of 1942?
Japan weakened its offensive by sending troops to help Germany,
American leaders tried to sign a truce with Japan
With fewer resources, Allied forces in the Pacific lost a series of battles against the Japanese
O Allied forces still went on the offensive and drove back the Japanese,
DONE

The Allies' "Europe first" strategy affect events in the Pacific in the first half of 1942 "with fewer resources, Allied forces in the Pacific lost a series of battles against the Japanese".

Option C

Explanation:

The policy of Germany first or Europe First was major pillar of the grand strategy, as agreed by the U.K and the U.S held during second World War. They would first use the dominance of their wealth to vanquish  Nazi Germany, Europe.

They battle a holding action toward Japan at the Pacific in the same time by applying only limited resources. Since Germany's defeat deemed the UK's biggest threat, most of the Allied forces would be focused against Japan.