Final answer:
Agricultural and medical advances have had the greatest effect on world population growth.
Step-by-step explanation:
Agricultural advances and medical advances have had the greatest effect on the world's population growth. Agricultural advances, such as the Green Revolution, increased food production and helped feed a growing population. Medical advances, including vaccinations and improvements in healthcare, have reduced mortality rates and increased life expectancy, leading to population growth.
Better transportation and global trading have also had an impact on population growth, but to a lesser extent. They have allowed for easier movement of people and goods, which can influence population distribution and economic growth.
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