english poem谁有关于黄河的英语演讲稿阿，谢谢

As in Egypt, Mesopotamia, and along the Indus River, Chinese civilization began within a major river valley. Modern China itself is a huge geographical expanse. Around 4000 BC, this huge area contained an almost infinite number of ethnic groups and languages. The course of Chinese history, however, is in part dominated by a single ethnic group and language. This history, in which a vast area populated by diverse ethnic groups became, over time, a more or less single culture, began in the Yellow River Valley.

The Yellow River is the northernmost of the major Chinese rivers. Directly to the south is the Yangtze River; south of the Yangtze is the West River; south of the West River is the Red River, much of which passes through modern-day Vietnam. Sometime around 4000 BC, when the area was much more temperate and forested, populations around the southern bend of the Yellow River began to practice agriculture. They sowed millet, but some time later, the Chinese began cultivat