What is the federal government's biggest single source of tax revenue? A. Government Bonds

B. Excise Tax

C. Federal Income Tax

D. Gift and Estate Tax

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.

What was the importance of the open door policy?

Which region was almost every country colonized by an imperial power in the 19th century