Expert Answer
The most important foreign policy of Jimmy Carter is that the countries foreign policy should have the highest principles embedded in it to portray its moral values. He instilled the concept, that fire is not always fought with fire. It could be also be quenched with water.
He brought the humanitarian aspect into the foreign policies. He also insisted that the United states of America is not going to abuse its power over the politically weak countries, as they have done in the past, for eg., with Vietnam. He also made it mandatory for the Department of State to submit the report on best human rights practices around the world.
The outcome of this humanitarian aspect in the foreign policy made a conducive environment for the both the President of the United States Jimmy Carter and the Soviet Union Leader, Leonid Brezhnev to sign an agreement on nuclear arms control agreement.
Because of his policy the world became a better place to live with peace among various countries apart from a few.