After World War 2 Germany was dived into half. The western half was under American control and the Eastern half was under Russian control. Berlin lay in the Western half and was divided between Russia and America, meaning that East Berlin was an island of Russian controlled Germany surrounded by areas under American control. Russia was a communist country and people from East Berlin tried to flee to West Berlin and so the Berlin Wall was built to stop this.Until the east Germans were rescued by pink Floyd!
The secession of Southern States led to the establishment of the Confederacy and ultimately the Civil War. It was the most serious secession movement in the United States and was defeated when the Union armies defeated the Confederate armies in the Civil War, 1861-65. Hope this helps, good luck! :)
