Final answer:
The exact year and numbers of Amtrak's containerized shipments cannot be determined from the provided material; however, containerization significantly impacted the shipping and manufacturing industries by improving efficiency and reducing costs.
Step-by-step explanation:
The main answer to the student's question regarding Amtrak's containerized shipments at a particular year is not provided in the reference material. However, what we can discuss is the impact of the introduction of standardized intermodal shipping containers on the shipping industry. Following the creation of Amtrak in response to declining profits in passenger rail services, advancements such as the containerization of cargo had a profound impact on manufacturing and shipping. Containerization enabled goods to be transported more efficiently and cheaply, which fundamentally changed the competitive landscape, particularly affecting US manufacturing jobs. Additionally, the mention of how large ships, like those carrying shipping containers, can travel long distances, such as from Shanghai to Los Angeles, illustrates the global reach and efficiency provided by container ships.