Athens reached its democratic zenith under the leadership of "<span>b. Pericles," since Pericles was one of the region's greatest advocates for citizen participation. </span>
<span>In the United States, the second half of the 20th century brought about historical socio-political movements that revolutionized American culture. Following the end of World War II in 1945, the U.S. entered a new era, experiencing a sharp growth in population, a successful economy, and an increased standard of living.</span>
