What is the national summer sport of Canada?
basketball
polocrosse
hurling
lacrosse 
Modern lacrosse in Canada has been a popular sport since the mid 1800s. Only field lacrosse was played until the 1930s, when box lacrosse was invented. In 1994 Parliament passed the National Sports of Canada Act which declared lacrosse to be "Canada's National Summer Sport", with ice hockey as the National Winter Sport.
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Answers by country
basketball
polocrosse
hurling
lacrosse 
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