Portugal built the earliest and longest-lasting empire in the comparison. Its imperial span ran from 1415 to 1999, a total of 584 years. That figure challenges the instinct to equate a small home population with a short imperial career. Trade, infrastructure, and a willingness to shed unprofitable commitments help explain its endurance.
Notable Point · 2:49-3:25
Portugal's empire outlasted the other two
The dates 1415-1999 give the Portuguese Empire a span of 584 years, making its longevity central to the comparison with its small European base.