Read these words from president truman's 1963 letter.
i knew what i was doing when i stopped the war that would
have killed half a million youngsters on both sides if those
bombs had not been dropped. i have no regrets and, under
the same circumstances, i would do it again.
-president harry s. truman letter to chicago journalist irv
kupcinet, august 5, 1963
based on this expert what conclusion did truman most likely reach about using the atomic bomb on japan

Judging from this personal reflection, former president Harry Truman was convinced that he did the right thing when he approved throwing two atomic bombs on two Japanese cities (Hiroshima and Nagasaki) in 1945. The US forces were preparing to invade the Japanese main islands, what would be very bloody and cost the lives of hundreds of Americans. Truman faced a dilemma : launch the invasion and suffer hundreds of thousands of casualties or use the atomic bomb to bring about a faster end to the war. He chose the second option. In the letter he shows no regret.

Explanation:

d is the best answer for this question.

as general terms,  indian territory,  the indian territories, or  indian country  describe an evolving land area set aside by the  united states government  for the relocation of  native americans  who held  aboriginal title  to their land. in general, the tribes ceded land they occupied in exchange for  land grants  in 1803. the concept of an indian territory was an outcome of the 18th- and 19th-century policy of  indian removal. after the  civil war(1861–1865), the policy of the government was one of  assimilation.