BAE Hawk (UK) ✈ Boeing T-45 Goshawk (USA) ✈ MIKOYAN MIG-AT (RUSSIA)

BAE Hawk (UK).  First flight: 21 August 1974 (Wiki)

McDonnell Douglas T-45 Goshawk (USA ). First flight: 16 April 1988 (Wiki)

The McDonnell Douglas (now Boeing) T-45 Goshawk is a highly modified version of the BAE Hawk land-based training jet aircraft. Manufactured by McDonnell Douglas (now Boeing) and British Aerospace (now BAE Systems), the T-45 is used by the United States Navy as an aircraft carrier-capable trainer.
— Wikipedia

Mikoyan MiG-AT (Russia). First flight: March 21, 1996 (WIKI)