What contributed to an increase in world poplation in the20th century?

The increase in world population during the 20th century can be attributed to several factors, including advancements in medicine and public health that significantly reduced mortality rates, particularly from Infectious Diseases. Improved agricultural practices and the Green Revolution enhanced food production, leading to better nutrition and lower starvation rates. Additionally, urbanization and economic development provided better living conditions, contributing to higher birth rates and longer life expectancies. Together, these factors created a demographic transition that fueled rapid population growth.