Explain what occurred at the following landmark events?

What effect did john hay’s open door policy letters have on the imperial powers of britain, france, germany, russia, and japan? a. it provoked the imperial powers to declare war on the united states. b. it caused the imperial powers to restrict trade in their trade with china. c. it warned the imperial powers that the united states would soon declare war on china. d. it signaled to those powers that the united states would take a larger role in world affairs than before.

Will mark brainliest to quickest answer which of the following is true about interest groups? a. always support one candidate b. not involved in elections c. may pass new laws d. ineffective in the states

What country aided north korea in the korean war?