Who was theodore judah and what was his significance in American history? why was he called "crazy judah"

Railroad engineer.

Theodore Judah was an engineer who surveyed, plotted out, the course for the transcontinental railroad. His contributions created the plan for the Transcontinental railroad as well as raising money and petitioning the government for support.

He was called "Crazy Judah" because he was so enthusiastic about creating a railroad that would connect the East and West coasts of the US.