Bristol Britannia (United Kingdom) ✈ Ilyushin IL-18 (USSR) ✈Lockheed L-188 Electra (USA)

Bristol Britannia (United Kingdom). First flight: 16 August 1952 (WIKI)

ILYUSHIN IL-18 (USSR). First flight: 4 July 1957 (WIKI)

LOCKHEED L-188 ELECTRA (USA). First flight: December 6, 1957 (WIKI)

Canadair CL-44 (Canada). First flight: 16 November 1959 (WIKI)

In the 1950s, Canadair had acquired a licence to build the Bristol Britannia airliner.
— Wikipedia