On May 10th, 1869, the world’s first transcontinental railroad was completed connecting the eastern United States to the western United States. From the groundbreaking ceremony in Sacramento, California, on January 8th, 1863, to the “Golden Spike” ceremony at Promontory Summit, Utah, it took six years to complete. The men who built it came from many walks of life, from Irish men looking for gold, Chinese immigrants fleeing from war and famine in their homeland, and Civil War veterans. The completion of the railroad made the trip across the United States go from a 6-month wagon-train journey to a 7-day train journey.