Answer: the introduction of new crops from the Americas
Explanation:
The rapid population increase in China in the seventeenth and eighteenth centuries was due to the introduction of new crops from the Americas.
Food crops like maize, tomatoes, sweet potatoes, beans etc were brought into China which led to major developments accompanied with migration and population growth.
I think it’s clumped distribution
Mainly through ideas of Manifest Destiny, the idea that settlers had a god given right to expand with the manifest destiny. after the Louisiana purchase, the US bought land previously owned by the French. We made a purchase of the land, thus it was believed the land was ours, even if others were living on it. plus, the government of the time gave rewards in the land, for fighting the civil war. After the gold rush, more were expanding west for personal wealth, it became a common way of life. Much like the saying if everyone was jumping off a cliff would you, everyone was doing it, so many would not have found it hard to live on land that may have not truly been there's.
Ok here is the project sorry I didn’t want to type it all out so here is the picture of the work hope it helps
Im not sure but I think the answer is Pancreas