Which of these events occurred last?
a. germany invades poland
b. japan attacks pearl harbor
c. united states drops the atomic bombs on hiroshima and nagasaki
d. soviet army defeats the german army at the battle of stalingrad.

answer; people where able to travel across the u.s.a faster than any other mode of transportation,travel time was about a week,from coast to coast

the federal constitution of the united mexican states of 1824 was enacted on october 4 of 1824, after the overthrow of the mexican empire of agustin de iturbide. in the new constitution, the republic took the name of of united mexican states. it was replaced by the federal constitution of the united mexican states in 1857.