Joseph McCarthy: Between 1950 and 1954 he charged many Americans with harboring communist sympathies. Eventually the Senate condemned his behavior but not until he ruined thousands of lives. Great Society: The Great Society was created by Lyndon Johnson. It funded Medicare for the elderly, job training, and low-cost housing for the poor. Ronald Reagan: He was a vigorous anti-communist who was elected president who promised to end Americas role in Vietnam. Brown v. Board of Education of Topeka: It declared that segregated schools were unconstitutional. Martin Luther King Jr.: A gifted preacher that was the leader of the civil rights movement. King organized boycotts and led peaceful marches throughout the 1960s to end segregation in the U.S. St. Lawrence Seaway: It opened the Great Lakes to ocean-going ships and linked the interior of both countries to the Atlantic ocean.