What was something very important that happened in 2000?

In 2000, one of the most significant events was the controversial U.S. presidential election between George W. Bush and Al Gore. The election culminated in a historic Supreme Court ruling in Bush v. Gore, which effectively decided the outcome by halting a recount in Florida, giving Bush the presidency despite Gore winning the popular vote. This election highlighted issues of electoral processes and voting technology, leading to significant discussions about electoral reform in the United States.