Question: An egg of Columbus or Columbus' egg, refers to a brilliant idea or discovery that seems simple or easy after the fact, the expression refers to an apocryphal story in which 1492, a Spanish-based transatlantic maritime expedition led by Christopher Columbus encountered the Americas, a continent which was previously unknown in Europe, leading to the colonization of the Americas?
Sentence (from "Voyages of Christopher Columbus"): In 1492, a Spanish-based transatlantic maritime expedition led by Christopher Columbus encountered the Americas, a continent which was previously unknown in Europe, leading to the colonization of the Americas.
Relevant evidence: Yes