Audrey, 4 modern wonders of the world By pwikman 987 BCE Chichen itza became the most powerful city in yucatan 312 BCE Petra was attacked by a king named antigonus Jul 24, 1911 Hiram bingham discovered machu picchu May 4, 1984 Dong yaohui was the first person to walk the great wall of china The great wall of china was built so people called the huns could not get in to a part of china.
