I want to know something about the history of Sumerians and Mayans.

Some of the introductions I found from the encyclopedia were not copied online, but were purely input and sorted out by myself.

Sumerians: Both the Euphrates River and the Tigris River originated from the Armenian Plateau in West Asia. Around 4000 BC, Sumerians became the earliest residents here. They created a splendid Sumerian civilization, and what best embodies the characteristics of this civilization is their writing-cuneiform. This kind of writing appeared about 5000~6000 years ago. At first, this kind of writing was pictorial writing, and gradually, this kind of pictorial writing developed into Sumerian ideographic writing. They combine one or several symbols to express a new meaning. Cuneiform is the earliest script in the world, but it became extinct in 1 century due to its complexity. Sumerians disappeared around 2000 BC (replaced by Babylon).

Maya: 1839, people found the remains of Mayan civilization in the tropical jungle of Honduras. Since then, archaeologists around the world have discovered more than 170 abandoned Mayan ruins in the jungles and wasteland of China and the United States. Mayan civilization spread to almost all of Central America. Around 2500 BC, Mayan civilization appeared. They were also the first people to grow corn in the world. Moreover, in the absence of metal tools and means of transportation, Jin Yong created brilliant civilizations (such as pyramid temples, solemn palaces and astronomical observatories). However, just when the Mayan civilization reached its peak, it collapsed around 800 AD. The Mayans in the southern lowlands abandoned the bustling cities, and the temple became a ruin haunted by wild animals. Until16th century, European colonists landed in America, massacred and plundered, and Mayan civilization declined completely.

Hoo ~ I've been sorting it out for more than half an hour. . .