Why does the location of the interior plains make it the America's Breadbasket?

The Breadbasket of America is when many early Kansas farmers grew corn and wheat, but the droughts and the bugs often killed there crops. During the 1870's a religious group called the Mennonites came from Russia. They introduced a winter wheat called red turkey. The Kansas farmers planted it in the winter and harvested it in early summer. So they didn't have to worry about the droughts or the bugs killing there crop. Over time production of the wheat spread thru out all of Kansas. In 1894 the red turkey wheat became the states leading cash crop. Thousands of flour mills where built to process all of the wheat. That's when Kansas became known as The Breadbasket of America.