The reason behind change in political system from kathmandu valley?​

After fidel castro became the leader of cuba, many cubans moved to the united states. why did cubans leave their home country? a. job opportunities b. religious reasons c. political reasons d. educational opportunities

Which technological breakthrough of the 1950s revolutionized the way that americans kept up with news and world events? a) radio b) internet c) television d) motion pictures

Give an example of a situation in which an individual's pursuit of economic self-interest may not benefit but instead harm the rest of society