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This term was coined by Mark Twain and Charles Dudley Warner in their book The Gilded Age: A Tale of Today, published in 1873. The term refers to the gilding of a cheaper metal with a thin layer of gold. Historians view the Gilded Age as a period of rapid economic, technological, political, and social transformation.
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Answer:
After the mid-20th century , Canada and the United States became extremely close partners. Canada was a close allie of USA during the Cold War.
William Lyon Mackenzie King (Prime minister) rejected free trade with the United States.
August 1957, the Canadian/American governments said they were going to integrate their air forces under a split command called the North American Air Defense Command (NORAD). This time during The Cold War, both Canada and the US feared long-range Soviet attack.