Though Grey strongly promoted national unity among French and English Canadians, as well as advocating unity within the entire British Empire, his causes frequently raised the ire of Bourassa and the Quebec nationalists. Grey was involved in the planning for the tercentennial of Quebec in 1908, marking the 300th anniversary of the landing of Samuel de Champlain at what later became Quebec City. At Grey's suggestion, the Cabinet agreed to Grey's plan to have the Plains of Abraham designated as a national park; this would be done to coincide with the Quebec celebrations and Grey saw the official ceremony as being an event that would promote Franco-Anglo-American friendship. The government arranged for the attendance of the Prince of Wales (later King George V), American and French warships, and a host of visiting dignitaries. Still, the Ligue saw this as solely a tribute to the Empire; Bourassa and other nationalists complained that Grey had transformed a day intended to celebrate Samuel de Champlain into a celebration of James Wolfe.