Now may I suggest some of the things we must do if we are to make the American dream a reality. First I think all of us must develop a world perspective if we are to survive. The American dream will not become a reality devoid of the larger dream of a world of brotherhood and peace and good will. The world in which we live is a world of geographical oneness and we are challenged now to make it spiritually one.

—"The American Dream,"
Dr. Martin Luther King, Jr., 1964

Which sentence best summarizes King’s reason in this passage to support his claim that Americans must come together as equals?

People make the American dream a nightmare by focusing on the rest of the world.
Americans must stop being lazy as it gets in the way of change.
Americans should travel the world in order to get perspective and be open minded.
America must develop a world perspective of brotherhood to keep the American Dream alive.