For 28 years, two million people lived in a city completely surrounded by another country. After World War Two, Germany was split into West and East, and Berlin was split too. But the whole city sat about a hundred miles inside communist East Germany.
In 1948 the Soviets cut every road, rail line and canal into West Berlin, so the Western allies flew in food and coal for eleven months. In 1961 East Germany sealed the city off with 96 miles of wall and fence. It stood until November 9, 1989.
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