What changes took place in cuba when fidel castro became leader?

“Fidel Castro is the man who led a small band of guerrilla fighters to power in the late 1950s, outlasted nine US presidents and ended up at the centre of the most dangerous moment in the Cold War. He even holds the record for the longest speech at the United Nations. In short, he brought a small Caribbean island to the centre of world politics.”

Where are the sentences?

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