What are three main ways americans took part in the second great awakening?

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.

Ineed to have answers for numbers 2-4 reply to this question

What do you think should be the most important factor in president considered when picking a supreme court justice