Climatic problems in ancient summer

Judging from sediments (karst, lakes, glaciers, etc.). ), tree rings, coral rings and ancient books record that the recent historical period belongs to the warm period, and I am afraid it is also the peak of the warm period.

There was such a warm period in ancient times. Generally speaking, the warm period is relatively peaceful. Because in the cold period, the climatic conditions in the northern pastoral areas deteriorated, which aggravated the nomadic people's desire for aggression.

Although there was such a warm period in ancient times, the natural adjustment ability was good, such as water bodies and forests. So it won't be difficult. The main reason is that the city is uncomfortably hot now. Few people suffer in the desert, so there is no need to discuss it.