HelP PLease ASAP it’s due today or Sunday :( answer back

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.

Business people who received land grants to recruit new settlers to the area were known by what term

What change took place in the african slave trade in the 1500's?