[{"data":1,"prerenderedAt":46},["ShallowReactive",2],{"question:which-is-the-longest-river-system-in-canada":3},{"question":4},{"id":5,"slug":6,"format":7,"answers":8,"chapter":13,"correct":17,"related":19,"question":38,"references":39,"reviewedAt":44,"explanation":45},"ca-f-016","which-is-the-longest-river-system-in-canada","choice",[9,10,11,12],"The St. Lawrence River","The Fraser River","The Saskatchewan River","The Mackenzie River",{"id":14,"title":15,"summary":16},"symbols","Symbols and regions","National symbols, the economy, and the regions of Canada.",[18],3,[20,23,26,29,32,35],{"slug":21,"question":22},"in-which-year-was-the-red-and-white-maple-leaf-flag-first-raised","In which year was the red and white maple leaf flag first raised?",{"slug":24,"question":25},"true-or-false-canada-is-one-of-the-worlds-largest-producers-of-uranium","Canada is one of the world's largest producers of uranium.",{"slug":27,"question":28},"which-national-holiday-is-also-called-the-sovereigns-birthday","Which national holiday is also called the \"Sovereign's Birthday\"?",{"slug":30,"question":31},"which-ocean-is-on-canadas-east-coast","Which ocean is on Canada's east coast?",{"slug":33,"question":34},"the-canadian-shield-is-known-for-which-resources","The Canadian Shield is known for which resources?",{"slug":36,"question":37},"which-is-the-biggest-city-in-canada","Which is the biggest city in Canada?","Which is the longest river system in Canada?",[40],{"url":41,"kind":42,"title":43},"https:\u002F\u002Fwww.canada.ca\u002Fen\u002Fimmigration-refugees-citizenship\u002Fcorporate\u002Fpublications-manuals\u002Fdiscover-canada\u002Fread-online\u002Fcanadas-regions.html","official","IRCC: Discover Canada: Canada's Regions","2026-11-07T23:18:17.820361+00:00","The Mackenzie River system is about 4,200 km long. It is the second-longest in North America, after the Mississippi, and flows north to the Arctic Ocean.",1794177770948]