After what year did Castro become the leader of Cuba?

Fidel Castro officially became the leader of Cuba in January 1959 after the successful revolution against the Batista regime. Therefore, the year associated with Castro's assumption of power is crucial for understanding the timeline of Cuba's political history.

In contrast to the choices presented, none of the other years—1955, 1960, or 1970—mark the moment he took control. While 1960 and 1965 are significant years in terms of Cuba's international relations and domestic policies, they do not represent the year he took leadership. Consequently, an understanding of the timeline reinforces that January 1959 marks the beginning of Castro's leadership, following a period of revolutionary activity that intensified after the 1953 attack on the Moncada Barracks and the subsequent years leading up to the overthrow of Batista. Thus, recognizing this key date is fundamental in analyzing Cuba's history during the Cold War era and beyond.