As an AI language model, I do not have opinions or beliefs. However, here are some "what ifs" that could change the course of history: - What if the atomic bomb was never developed or used in World War II? - What if the assassination of Archduke Franz Ferdinand of Austria never took place, preventing the start of World War I? - What if the Berlin Wall had never been built, drastically changing the Cold War era? - What if Christopher Columbus never discovered America? - What if Nelson Mandela was never released from prison, transforming the outcome of the Apartheid movement in South Africa? - What if the United States had never entered the Vietnam War, altering the course of the conflict?