Over centuries, elements of Aboriginal, French, British and more recent immigrant customs have combined to form a Canadian culture. Canadian culture has also been strongly influenced by its linguistic, geographic and economic neighbour, the United States. Since the conclusion of the Second World War, Canadians have supported multilateralism abroad and socioeconomic development domestically. Canada currently consists of ten provinces and three territories and is governed as a parliamentary democracy and a constitutional monarchy with Queen Elizabeth II as its head of state.