The answer D is not true. Indeed, it started on june 1948 and ended on the 12 may 1949 !
Answer: Emancipation Proclamation
Explanation: The president at the time was Abraham Lincoln, an abolitionist, and he wanted to put an end to slavery.
sorry this is late <3
the answer is "They could not agree on how to best defend the region." or the option C.
pls trust me, i got this right on the assignment, have a nice day :)