2020年9月18日版 Maya Civilization

Maya Civilization 第2676期
The Maya civilization(文明) developed in Central America 4,000 years ago. The Mayan people lived there for a long time.
The first Mayan cities were built around 750 B.C. The Mayan people used a written language. They were good at art, building and math. They knew about stars and planets. This knowledge helped them make calendars. Their calendars are as precise(精确的) as today’s calendars. It is really amazing. Their art and buildings have lots of different styles.
However, the Maya civilization later started getting smaller. From 800 A.D. to 900 A.D., the Mayan cities became empty one by one. There are different opinions on why this happened. Some people believe that the reason was a long-term drought(旱灾). Others think it was because there were too many wars.