Final answer:
Amtrak's Express service between New York City and Los Angeles was inaugurated on May 1, 1980, as a continuation of the U.S. government's efforts to maintain passenger rail services, reminiscent of the historic establishment of the First Transcontinental Railroad.
Step-by-step explanation:
On May 1, 1980, Amtrak inaugurated the new Amtrak Express service non-stop between New York City and Los Angeles. Despite dwindling profits, the government consolidated remaining lines and created Amtrak to maintain an essential passenger rail service across the country. This initiative reflects a commitment to connect various regions of the United States, much like the historic efforts such as the completion of the First Transcontinental Railroad in 1869, which dramatically enhanced coast-to-coast connectivity.