【单选题】Steamships were first introduced into the United States in 1807, and John Moison built the first steamship in Canada(then called British North America)in 1809. By the 1830s dozens of steam vessels wer...
A.
To contrast travel by steamship and stagecoach.
B.
To criticize the level of public debt in nineteenth century in Canada.
C.
To describe the introduction of steamships in Canada.
D.
To show how Canada surpassed the United States in transportation improvements.