Why United States right to spy on the Soviets during the Cold War?

Explanation:

U.S. spies for the Soviet Union in the early days of the Cold War were generally motivated by ideology, whereas in the 1980s and 1990s they were generally motivated by personal gain. After the collapse of the Soviet Union, most U.S.-Russian spying was for security purposes.

c. mass = force / accellaration

step-by-step explanation:

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain