Answer:
an iceberg
Explanation:
For decades after the disaster, there was little doubt about what sank the Titanic. When the "unsinkable" ship, the largest, most luxurious ocean liner of its time, crashed into an iceberg on its maiden voyage in 1912, it took more than 1,500 of its 2,200 passengers to the bottom.
by explaining that the travel time in the air was about the same as by train.
