C) Cuba had been guilty of shooting down two civilian planes.
Known in Cuba as "el bloqueo", the US embargo on Cuba consists of an economic, financial and trade ban imposed by the US on the Cuban government in 1962. Subsequently, the blockade became law in the beginning. from the 90s.
After Cuba shot down two unarmed sister planes in 1996, killing three Americans and a US resident, a bipartisan coalition in the US Congress passed the Helms-Burton Act.
Then-President Bill Clinton, in 1999, increased the trade ban between the two nations by limiting the commercialization of foreign subsidiaries of US companies to Cuba by seven hundred million dollars a year. With the expansion of the ban scheme, the embargo on Cuba is considered one of the longest in the contemporary world.