B. To create more fertile land for growing crops
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.
On the eve of the american invasion of the japanese held island of iwo jima, the mood of the japanese defender of the island, they knew they were on their own. but they were determined to fight as well and as long they could before the inevitable end. thank you for your quesstion.
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