What kind of transportation was available in the 1900s?

At the beginning of the 1900's, the most common forms of land transportation were the railroad and the horse. Well, and on foot, of course.

On American rivers, the steamboat was still very much in use, but was fading in popularity. At sea, the great ocean liners and steamships were very common.

The airplane was invented in 1903. The automobile had been invented in the late 1800s, but was not yet in widespread usage.

By the end of end of the 1900s, it was airplanes for anything longer than a 5-hour drive, and sometimes for those as well. Passenger ships were still popular for recreation and entertainment, but very few people sailed from here to there. Cars are still extremely common, of course.