Answer: A) Lincoln signed the Pacific Railroad Act of 1862 into law, which stimulated the construction of the railroad.
Explanation: Just took the test :)
Historians points out that the cold war reached its height during the Cuban crisis of 1962, when both superpowers, USA vs Soviet union achieved mutually assured destruction, known as MUD.
the Cuban crisis basically resulted from the soviet union placing its nuclear arsenals in Cuba territory, in retaliation of the USA pacing its arsenals in European Nato countries such as Turkey. could have any of the country overreacted, it would have resulted in another war; This time,all sides loaded with weapons of mass destruction, and the catastrophe would have been worse than have even been witnessed in history.
C might be the correct answer
I think it is c. They both originated in the Indus River Valley.