VANCOUVER, British Columbia—The Canadian Pacific coast province of British Columbia declared a state of emergency Wednesday following floods and mudslides caused by extremely heavy rainfall, and officials said they expected to find more dead. Every major route between the Lower Mainland of British Columbia, where Canada’s third largest city of Vancouver is, and the interior of the province has been cut by washouts, flooding, or landslides following record-breaking rain across southern British Columbia between Saturday and Monday. The body of a woman was recovered from one of the mudslides late Monday. “Torrential rains have led to terrible flooding that has disrupted the lives and taken lives of people across B.C. I want people to know that the federal government has been engaging with the local authorities,” Canadian Prime Minister Justin Trudeau said in Washington. “We’re sending resources like the Canadian Armed Forces to support people but also we’ll be there …