Answer:
The League of Nations was established in 1919.
The aim was to keep world peace and to ensure security.
At its largest there were 58 countries involved with the LoN.
The League of Nations failed as there had to be unanimity for decisions. Unanimity made it really hard for the League to do anything. The League suffered big time from the absence of major powers — Germany, Japan, Italy ultimately left — and the lack of U.S. participation. They also had no army so that meant that when countries were trying to annex one another the League couldn't protect the land.
Answer:
Agriculture allowed people to stay in one place, and increased food production caused the population density to expand far beyond levels that could be sustained by hunting and gathering alone. This growth in population density provided a critical mass of people to sustain and spread contagious infectious diseases.
https://study.com/academy/lesson/how-geography-isolated-ancient-china.html
That video will explain everything. I have already learned this in school, and it is very important on the test. VERY IMPORTANT.
Cenozoic Era, Mesozoic Era, <span>Paleozoic Era, Precambrian Time</span>
