Can you be more specific?
D. Established China and increased Trade<span />
Built (1811–37) from Cumberland<span>, </span>Md.<span> (western terminus of a state road from </span>Baltimore<span> and of the Chesapeake and </span>Ohio<span> Canal), to </span>Vandalia<span>, Ill., it forms part of the present </span>U.S. Route 40<span>.</span>
Answer: they are one of the three that makes the government
Explanation:
