Cultural and Physical Connections
It is important to remember the strong connections that exist within North America. It is not surprising that the United States and Canada engage in more trade with each other than any other country. Their border follows the 49th parallel, 49° N latitude, and is the longest international border in the world at 8,891 km. It dates to the Oregon Treaty of 1846 between the United States and Great Britain. It also includes 119 land border crossings, 30 railroad crossings, and 13 international ferry crossings.
Figure 4.15 helps visualize how many crossings exist by only showing those in the eastern states. They are many physical locations for trade between these two North American countries.
Figure 4.15 U.S.-Canada Eastern Land Ports of Entry.
Source: Federal Highway Administration, U.S. Department of Transportation, https://rosap.ntl.bts.gov/view/dot/53762/dot_53762_DS2.pdf
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