How do farmers modify the region's environment to grow rice?

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The final step in growing rice is milling, a mechanized process that American mills have perfected.

At the mill, the harvested “rough rice" passes through sheller machines to remove the inedible hulls.  This process yields brown rice with the bran layers surrounding the kernel still intact.  Brown rice can be used as is or further milled by machines that rub the grains together under pressure.  This abrasion removes the bran layer to produce white or “polished” whole kernels of rice.  Finally, the white rice is enriched with a thin coating of vitamins to replace some of the nutrients lost during milling.

Technology has enabled the U.S. rice industry to consistently produce rice of unsurpassed quality.  For example, many U.S. rice mills use laser sorters that look for broken, discolored or immature kernels and remove them from the whole kernels of rice during processing. This ensures consistency in appearance and size.

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Explanation:

d

explanation:

it affected it because the kingdoms (with trade) slowly got richer and richer.