The United States embargo against Cuba began because Cuba refused to make moves toward a more democratized government and towards greater respect for greater human rights.
Here are a few more specific details on what began the US embargo vs Cuba:
The Cuban embargo is actually titled the Cuban Democracy Act and the embargo became a code of law in 1992. This step was taken to further ensure that trade with Cuba would be prevented.
Four years later, in 1996, the United States passed the Helms-Burton Act in order to further restrict trade with Cuba. The Act required that the Cuban government would need to meet certain requirements before the trade sanctions would be lifted against the country.
The Cuban embargo is known to be the longest embargo in United States history, but it has changed over time:
Despite the restrictions of the embargo preventing all trade with Cuba, the United States is actually the fifth largest exporter to the country of Cuba.
The embargo does have its opponents and proponents. Many Cuban Americans who live in the United States argue that lifting the embargo and allowing free trade with Cuba would be beneficial to both countries. However, the US government has yet to be convinced by citizens and business owners alike that free trade would benefit the US unless the country of Cuba makes the moves necessary to allow the embargo to be lifted.
So, now you know what started the US embargo against Cuba, as well as some of the politics behind it and some of the changes that have been made over the years.