Canadian prime minister Justin Trudeau on Sunday toured the Taj Mahal with his wife and children as he began a week-long visit to promote trade and investment with India. Trudeau, his wife Sophie Gregoire and their three children posed for a family portrait before marvelling at the legendary marble monument frequently visited by foreign leaders during roadshows to India. It was Trudeau's first visit to India since taking office in 2015. He will meet Prime Minister Narendra Modi, and efforts to expand trade will dominate an agenda also covering energy, education and infrastructure.