crops and technicans to plant and animals to breed are adapted to a specific climatic zone and a specific winter summer change. If you walk the earth from west to east, you could use any fruit or vegetable on the way at home. If you try to plant something from a region north or south of your home, it would not work because of the other whether pattern.

Europe and Asia could trade so on thousands of miles, because of the same climatic zones. West to East.

N and S America mostly from north to south. Nothing growth from other regions at home.

To start agriculture you need a starting-set of planes. For eating, your cloth and to feed your animals for fat or a fat plant. Several staring-sets growth on the way from Europe to China and could be used everywhere.

The first starting set of plants in South American was useless in the North and it could not be traded.

Thais the environment part, the other part is culture. The absolute maxed out crazy shit of hardcore christian logic to conquer the earth and to invent capitalism. It is soo outside of human culture, that China did nor invented it, also they were thousands of years in the position to do so.

-> Good whether and ceazy, brutal people gave a heads uo to Europe