The statement that best describes the United States' changing role in the world during the twentieth century was E.<span>It became a military superpower in the world but lacked a strong economy. The reason for the non strong economy was due to the Great Depression, and financial crisis of the 1920's.</span>
Im going to assume its because a "lame duck" session only happened when congress meets after a election.
The knowledge of crop cultivation in the Americans is believed to have originated in the area of South America and Mexico in general. These two areas seem to be responsible for the crop cultivation that has been going on there ever since.
They held desired resources which included land and labor. Hope this helps.