Caesar passed a number of reforms through the Senate including: -->Giving land to poor Romans
>Making sure military veterans had land after their service
<span><span>>A law against extortion, or threatening someone to get what you want</span></span>
The correct answer should be the industrial revolution. People started developing technologies that helped prevent diseases and this caused many more children to survive and many more people to live longer. The advances made in medicine are the key to rapid population growth, as well as era's like the world war 2 era after which came the baby boom generation where the population growth was at an all time high.
Life and food that my answer
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Hope I helped, and good luck!