The America's civil war was fought in year 1861-1865.
<u>Explanation:</u>
The war was between the north and the south America. Basically the war broke out as a demand of freedom from the enslavement by black people. Besides Abraham Lincoln was elected as the president of the United States at that time giving hope to the black people to demand equal rights.
Therefore immense and grave war broke out between the armies of the black and white, thousands of people died. The war effectively got over.
However the war had a powerful impact on the country as well. Black people were freed from the enslavement and got equal rights in the country just like any other white person.
The thing that President Wilson's Fourteen Points proposed about communication between nations was open discussion and no secret treaties between nations. This was proposed by Wilson to avoid any further war between nations as was the case of World War I. It can be called Open Diplomacy as well.
It was one of the longest-lived colonial powers, lasting for almost six centuries from when Ceuta was captured in 1415, until Macau (now China) was handed-over in 1999.
<span>The American Colonization Society</span>