In the executive branch, the head of government is the highest or the 2nd-highest official of a sovereign state, a federated state, an autonomous region, a dependent territory, a self-governing colony
President Dilma Rousseff of Brazil and President Christina Kirchner of Argentina in 2015
The heads of government of five members of the Commonwealth of Nations at the 1944 Commonwealth Prime Ministers' Conference. From left to right, Mackenzie King (Canada), Jan Smuts (South Africa), Winston Churchill (United Kingdom), Peter Fraser (New Zealand), and John Curtin (Australia).
The prime minister of Canada is the head of government of Canada. Under the Westminster system, the prime minister governs with the confidence of a majority of the elected House of Commons; as such, t
John A. Macdonald, the first prime minister of Canada (1867–1873, 1878–1891)
Canada's prime ministers during its first century
William Lyon Mackenzie King, the 10th prime minister of Canada (1921–1926; 1926–1930; 1935–1948)