Istanbul, Not Constantinople

$400 The Asian country of Burma was renamed to this in 1989. >!What is Myanmar?!<

$800 The Vietnamese city of Saigon was renamed to this in 1976. >!What is Ho Chi Minh City?!<

$1200 The African country of Swaziland was renamed to this in 2018. >!What is Eswatini?!<

$1600 The Indian city of Madras was renamed to this in 1996. >!What is Chennai?!<

$2000 The African country of the Republic of Upper Volta was renamed to this in 1984. >! What is Burkina Faso?!<