The main purpose of Truman's Radio Address was Α. To warn Americans of a possible nuclear war

B. To explain the accomplishments of the U. S. in nuclear research, and how this will impact the war

C. To offer remorse for killing so many Japanese

D. To explain the positive uses for nuclear power in the post-war world​

i do believe its (d) it allowed the government to offer pioneers sixty acres of western land if they lived on it and made improvements to it.

explanation: signed into law in may 1862, the homestead act opened up settlement in the western united states, allowing any american, including freed slaves, to put in a claim for up to 160 free acres of federal land. by the end of the civil war, 15,000 homestead claims had been established, and more followed in the postwar years