HAWKER SIDDELEY HS-121 TRIDENT (UK) ✈ Boeing 727 (USA) ✈ Tu-154 (USSR) ✈ Il-74 (USSR)

The Hawker Siddeley HS 121 Trident (originally the de Havilland D.H.121 and the Airco DH 121) was a British short and medium-range airliner. It was the first T-tail rear-engined three-engined jet airliner to be designed.
— Wikipedia

Hawker Siddeley HS-121 Trident (UK). First flight:  January 9,  1962 (Wiki)

Boeing 727 (USA). First flight: February 9, 1963 (Wiki)

Tupolev Tu-154 (USSR). First flight: October 4, 1968 (Wiki)

Tupolev Tu-154. First flight: October 4, 1968 (Wiki)

Tupolev Tu-154. First flight: October 4, 1968 (Wiki)

Ilyushin IL-74 (USSR). 1966. Prototype