Final answer:
Most passengers on the Titanic traveled due to economic reasons or to elevate social status, with third-class passengers seeking new opportunities in America and first-class passengers enjoying luxury and prestige.
Step-by-step explanation:
The passengers aboard the Titanic traveled for various reasons. For most, it was not a matter of 'weren't supposed to,' rather, they chose to travel for opportunities and personal reasons. Many third-class passengers, for example, were emigrants from Europe seeking a new start in America, driven by economic reasons such as employment opportunities and escaping poverty. Conversely, some of the first-class passengers traveled to maintain or elevate their social status, enjoying the luxury and prestige associated with the Titanic's maiden voyage.
While Random chance played a role because some people happened to choose the Titanic over other ships for their travel, it wasn’t the predominant reason. The Titanic was, at the time, the largest passenger ship and represented a significant leap forward in maritime transportation, attracting attention from various social strata.