Answer:
I would say maybe the second choice that is listed in the picture.
Explanation:
I know that "Cracking" involves spreading voters of a particular type among many districts in order to deny them a sufficiently large voting bloc in any particular district.
The Nuclear Test-Ban Treaty signed by the United States, the Soviet Union, and Great Britain in 1963 stopped the testing of nuclear weapons in all <span>locations except "on land", since it was mainly to prevent this testing from taking place in space or the atmosphere. </span>
Americans were the white settlers.