The correct answer should be by creating a labor shortage that pushed the continent toward a market economy
People started earning a lot more because the competition was reduced and people started to pay more to get things. Peasants started earning more and the economy started growing since there was now fewer people. People who were skilled at things were now a minority.
Political leaders, including President Kennedy initially opposed the March out of fear of violence. President eventually gave his approval but political leaders were not part of the program.