GREAT WALL OF CHINA History of the Great Wall of China: The Great Wall of China is the national military defense project in the cold weapon war era with the longest time and the largest amount of construction in the world. It condenses the sweat and wisdom of our ancestors and is the symbol and pride of the Chinese nation. According to historical records, since the Warring States period, more than 20 vassals and feudal dynasties have built the Great Wall. The earliest was the Chu Kingdom. To defend the nomadic or enemy countries in the north, they began to build the Great Wall. Subsequently, Qi, Yan, Wei, Zhao, Qin, and other countries also began to build their own Great Wall for the same purpose. After Qin unified the six countries, the famous emperor Qin Shihuang sent Meng Tian northward to the Xiongnu, connecting the Great Walls of various countries. From Linyao in the west to Liaodong in the east, it stretched for more than 10,000 miles. This is called the
HISTORY OF MAKAH MADINAH Mecca , Arabic Makkah, ancient Bakkah , city, western Saudi Arabia, located in the Ṣirāt Mountains, inland from the Red Sea coast. It is the holiest of Muslim cities. Muhammad, the founder of Islam, was born in Mecca, and it is toward this religious center that Muslims turn five times daily in prayer. All devout and able Muslims attempt a hajj (pilgrimage) to Mecca at least once in their lifetime. Because it is sacred, only Muslims are allowed to enter the city. In the 20th and 21st centuries, the city underwent vast improvements. The area around the religious shrines was cleared, the mosque enlarged, housing and sanitation improved, and transportation facilities enhanced. As a result, Mecca can accommodate the continually increasing number of pilgrims or hajjis. Area 10 square miles (26 square km). Pop. (2010) 1,534,731. City site Mecca is situated at an elevation of 909 feet (277 meters) above sea level in the dry beds of th