The us population tripled between 1790 and 1830 primarily because of ?

Various factors are contributing to the rise of the population of the United States :

a) There was a large population of young Americans who were starting families.

b) There as a decline in mortality rate, thus further boosting the population.

c) The area was expanding as new states were merging, providing enough space for the growth of population.

nuclear fission produces the atomic bomb, a weapon of mass destruction that uses power released by the splitting of atomic nuclei the fighting in iwo jima and okinawa affected the allies' pacific strategy because truman decided to drop the atomic bomb on mainland japan.

c 3 branches because idk why they had 3 well when:

you think of it there are still contrys with 3