1. A territory or nation whose geography, resources, and inhabitants have been investigated and mapped by explorers or researchers
Antarctica is no longer an unexplored country; it has been thoroughly studied by scientists.
A Antártida não é mais um país inexplorado; foi completamente estudada por cientistas.
2. A nation that has been colonized or investigated by foreign powers
During the Age of Exploration, many African regions became explored countries under European influence.
Durante a Era da Exploração, muitas regiões africanas se tornaram países explorados sob influência europeia.