Angel island was on the west coast
I believe it means back when slavery was around most of the African Americans were in the South and most of them tried to escape but couldn’t. So therefore it’s sayin that since they left and when the civil war ended and all that and when slavery was abolished the South was their home now, and so that’s why today African Americans live mostly in the South.
The blockade of Berlin was the closing of the borders that shared the United Kingdom and the United States with the Soviet Union in the occupied German territory. The city of Berlin, located in the middle of the current state (Land) of Brandenburg, was in this Soviet zone (very close to the Polish administration area and to oder-neisse). However, in Berlin there were troops from the other three allied armies, who had arrived there according to the pacts celebrated at the Yalta Conference (1945).
The blockade was imposed by the Soviet Union, and affected mainly the western area of Berlin, then controlled by the forces of the United States, the United Kingdom and France. It was applied in response to the monetary reform imposed by these countries.
