18 16 There is no summer in the world. What is the biggest threat to mankind in July and August?

18 16 is also called "the year without summer". Due to the eruption of Mount Tambora in Indonesia on 18 15, the weather in the northern hemisphere is seriously abnormal. All disasters occur in Europe, North America and Asia, and the low temperature is rare in summer. Europe and the United States suffered the most, and agricultural production was greatly affected; Asia was not spared, and there were large-scale famines in China and Yunnan.

The abnormal climate makes people's survival face great challenges. There are two biggest threats, food shortage and sudden drop in temperature.

Food shortage The eruption of Mount Tambora is extremely terrible, and it is one of the largest volcanic eruptions in human history. Ejected as much as 150 cubic kilometers of volcanic ash, reaching as far as the stratosphere at a height of 44 kilometers. A large amount of volcanic ash accumulated in the atmosphere, coupled with sulfur dioxide emitted during volcanic eruption, led to a sharp drop in global temperature one year later. It snows in some places even in summer. The abnormal climate makes crops fail and the prices of many agricultural products soar.

Without food, people can't live. In order to escape, many people left their homes, but on the way to escape, they were inevitably starved to death. Therefore, the biggest threat brought by temperature drop is food shortage. In that era of economic underdevelopment, food was so important. Without food, it's really half a foot in the gate of hell.

The temperature has plummeted, and the extremely cold temperature is another factor that threatens human survival. The continuous drop in temperature has caused countless deaths and injuries to crops such as cotton. Without cotton, people's cold protection becomes a big problem. At that time, only the rich could burn coal to keep warm, and the poor could only live in rags.

The cold weather has also caused many social unrest. In order to keep warm, people rob each other of cotton wool, coal and other warm items in the street, and the final result is nothing more than countless deaths and injuries.

To sum up, food shortage and sudden drop in temperature are the two biggest threats, and sudden drop in temperature is the main reason for food shortage.