the natural barriers were the himalaya mountains
A.
But technically, the U.S.'s largest trading partner is the European nations, with 270k exports, compared to Canada's exports - 310k.
The health care industry is what your looking for.
A primary source<span> provides direct or firsthand evidence about an event, object, person, or work of art. </span>Primary<span>sources include historical and legal documents, eyewitness accounts, results of experiments, statistical data, pieces of creative writing, audio and video recordings, speeches, and art objects.</span>
