Answer:
Military and diplomatic tensions diminished between 1972 and 1980 as the two superpowers engaged in dialogue, frecuent contacts and agreed to reduce their nuclear stockpiles (SALT Treaty) and to boost bilateral trade. US president Richard Nixon and Soviet secretary-general Leonid Brezhnev met at three summits between 1972 and 1974.
Explanation:
B is correct answer.
On B it saids, It began by 1890 and it continued until 1947 is the best describes the history of segregation in professional baseball.
Hope it helped you.
-Charlie
Africa is usually unstable on who ruled areas, and rebels tend to cause war, there is also a fight for natural resources. this makes a stable gov. difficult.
Richard Bancroft Hope this helps:)
