After Cuba lost economic aid from the Soviet Union, Fidel Castro allowed some economic reforms to occur. With the collapse of the Soviet Union in the early 1990s, Cuba lost its main source of economic support, which had been propping up the country's socialist system for decades. In response, Castro began to implement a series of economic reforms aimed at opening up the country's economy and attracting foreign investment. These reforms included allowing some private enterprise, opening up the country to tourism, and loosening restrictions on foreign investment. While Cuba remained a socialist country with a planned economy, these reforms represented a significant shift away from the country's previous economic policies.