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U.S.-Canada relations: A timeline
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Infographic map of the United States-Canada border, totaling 5,525 miles or 8,890 kilometers: 1,538 miles with Alaska and 3,987 miles across the contiguous United States. Canadians protest, 1911-style Cordial ties Unique relationship Address to Parliament History retold Welcoming strangers United States–Mexico–Canada Agreement Canadians protest, 2025-style Signs of the times
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U.S.-Canada relations: A timeline: Media

From tariff skirmishes to acts of bravery, the two countries with the longest border have long found ways to get along.
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Images

U.S.-Canada border
At 5,525 miles (8,890 km), the border separating the United States and Canada is...
EncyclopĂŠdia Britannica, Inc.
Canadians protest, 1911-style
Signs against the 1911 United States–Canada reciprocity treaty hang from the offices...
© Historic Collection/Alamy
Cordial ties
U.S. Pres. Franklin D. Roosevelt and Canadian Prime Minister W.L. Mackenzie King...
© Toronto Star Archives—Toronto Star/Getty Images
Unique relationship
NORAD, based in Colorado, is a joint operation by the United States and Canada to...
Jim Lo Scalzo—EPA-EFE/Shutterstock.com
Address to Parliament
U.S. Pres. Richard Nixon giving a speech to the Canadian Parliament in April 1972,...
© Alpha Stock/Alamy
History retold
The daring escape plan concocted by the Canadian government and the CIA was portrayed...
© 2012 Warner Brothers, Inc.
Welcoming strangers
Aircraft crowding a runway at Gander International Airport in Gander, a historic...
© Canadian Forces/CFB 9 Wing Gander—Handout/Reuters
United States–Mexico–Canada Agreement
(From left) Mexican Pres. Enrique Peña Nieto, U.S. Pres. Donald Trump, and Canadian...
Official White House Photo by Shealah Craighead
Canadians protest, 2025-style
Wearing red, chanting, and carrying signs, Canadians protest Donald Trump's call...
© Steve Russell—Toronto Star/Getty Images
Signs of the times
Placards reading “Buy Canadian Instead” on display at a Vancouver supermarket in...
© Visual China Group/Getty Images