Question

Which factor did not contribute to the increase of leisure travel in the early twentieth century in the United States?

the formation of the airline industry
the development of online travel websites
improvements in the railway system
the mass production of automobiles

Answer 1

The development of online travel websites did not contribute to the increase of leisure travel in the early twentieth century in the United States. The development of online travel websites did not contribute to the increase of leisure travel in the early twentieth century in the United States.