Which river formed the grand canyon?
a.

the columbia
b.

the colorado
c.

the rio grande
d.

the mississippi

What was a result of the use of farming machines

Who wrote the declaration of independence

Why was the u. s. annexation of hawaii delayed until william mckinley became president? a: the rebels who overthrew queen liliuokalani opposed u. s. annexation. b: the senate did not approve the treaty of annexation until mckinley entered the white house. c: supporters of the nationalist cause were in the majority in hawaii until 1898. d: mckinley’s predecessor, grover cleveland, refused to sign the treaty of annexation.