Answer:
To protect democratic values and prevent the spread of communism.
Step-by-step explanation:
The Reagan Doctrine was the name for the strategy implemented by the United States during Ronald Reagan's presidency, which aimed to limit the influence of the Soviet Union by supporting anti-Communist guerrilla movements in the Soviet satellite states. The aid that the US gave to anti-communist movements went to, among others, the Contras in Nicaragua, the Mujahedeen in Afghanistan and UNITA in Angola. The strength of the strategy lay in the relatively low cost of supporting guerrilla movements without the direct deployment of American troops, as opposed to the high costs incurred by the Soviet Union in supporting the communist governments in the countries concerned.