They sailed in ships from Europe.
The Answer Is Theodore Roosevelt
Maybe its because they fear what technology can do to the world. Maybe loosing their job to a machine or worried that a "certain idea would spread over the world and it would have a negative impact on that person and others." Or maybe it's because certain Americans don't believe in innovation or technology and they feared a progression in it. All depends on the American.
Hope this helps.
D. He founded the House of Wisdom to encourage Arabic translation.
