A:sailed to north america
The alliance system was important and played in the events that led to WWI because countries that were in alliances with other countries were obligated to support their allies when war was declared.
Castro became worried that the USA might launch another invasion. So he made an alliance with the USSR.The soviets bought sugar off Cuba so that Cuba didnt have to trade with Kennedy. Also Khruschev put a nuclear weapons site in Cuba, this meant that they were now within range of the US therefore giving them an advantage in the arms race.
The Europeans had no interest in Africa and didn't know about the gold and dimonds
