On May 8, 1980, the most destructive volcano in american history. Magma in the volcano began to rise up due to a earthquake. While the magma was rising up and out of the volcano it hit a huge patch of frozen water making the water expand. Therefor the volcano blew out sideways and caused huge flooding. The flooding was mixed with ash, a lot of water and the things of the surrounding area. When the volcano erupted the ash and rock from deep within the volcano had been sprung into the air at around 400 mph. The rocks and debris rose 15 miles into the air. In the end 57 people were killed not counting the wildlife.
As noted by the other Brainly user's response here, early Chinese civilization developed between the Yangtze River and the Huang He River (or Yellow River), because the plain between the rivers is fertile, allowing for the development of agriculture. It's also worth noting that the these two rivers extend for hundreds of miles from west to east before reaching the sea. This facilitated trade and transportation on the rivers. It also allowed Chinese rulers to maintain control and communication across the wide expanse of main Chinese territory.
Also worth noting would be the mountains and deserts and ocean that set China off from other lands. Large mountain ranges exist in the south and west regions of China -- such as the Himalayan Mountains, Kunlun Mountains, and Tianshan Mountains. The Gobi Desert sits in the northern part of China, and the Pacific Ocean is to the east. These various geographic features set China off from other lands, so that civilization there developed in its own unique ways, apart from outside influence.
One half of Canada's population lives in southern low land.
