Why is the region of Eurasia home to 80 percent of humanity?
Temperate climates are inhospitable for humans and animals.
Temperate climates increase the likelihood of disease.
Temperate climates allow for easier defense against invading enemies.
Temperate climates support agriculture.
The statement "Temperate climates increase the likelihood of disease" is not necessarily true. While certain diseases may thrive in temperate climates, it is not the sole reason why the region of Eurasia is home to 80 percent of humanity.
The main reason why Eurasia is densely populated is due to its suitability for agriculture. Eurasia has a diverse range of climates, including temperate, but it also encompasses other climatic zones such as subtropical and continental. This diversity allows for a wide variety of agricultural practices and crops to be grown.
Historically, Eurasia has been the birthplace of several significant civilizations, such as Mesopotamia, Ancient Egypt, the Indus Valley, and the Chinese civilization. These civilizations developed advanced agricultural techniques, which supported large populations and fostered cultural advancements.
Additionally, Eurasia's expansive landmass provided fertile soil, ample water resources, and diverse ecosystems that facilitated the domestication of animals and the development of trade networks. This, in turn, allowed for the growth of complex societies and the exchange of ideas, technology, and goods.
While factors like defense against invading enemies and temperate climates may have played a role in the development and sustenance of civilizations in Eurasia, they are not the primary reasons why the region is home to 80 percent of humanity.