<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>
Its called a wonder because of the odd shape an they didnt have machines to help build the pyramids it extremly hard to do and people wonder how it was done.