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 "Columbus Monument, Barcelona"): The monument serves as a reminder that Christopher Columbus reported to Queen Isabella I and King Ferdinand V in Barcelona after his first trip to the new continent.
Relevant evidence: No