The policy of detente refers to the time in the 1960s-1970s when the two superpowers eased tension and tried to cooperate to avoid conflict i the cold war.
Your answer would be A or B
They only allowed blacks to buy houses in certain areas.
They used it for water supply or safe channel developed to pass on water.
This statement is true.
C .It caused fewer deaths than other major battles.
Explanation:
Battle of Antietam was a fairly happening battle in the middle of the Civil war for many reasons.
The emancipator program was not exactly hurt by it by any means of the word as it was issued 5 days later and there was no change in generals just because of the battle.
IT had bee a strategic Union victory in fact but not an all out victory on either side and had produced fairly less casualties.