How Everything Works on Instagram: "At midnight on January 1, 2000, the world welcomed what many believed to be the dawn of a new millennium. Cities erupted in fireworks, crowds counted down the final seconds of 1999, and cheers echoed as the year 2000 began. Though the true start of the new millennium would technically come a year later, people embraced the moment as the beginning of a new century and a fresh era. It was a night marked by global celebrations, live televised countdowns, and an e