Social Studies Questions about the North and South?, plz help?

1. Who built the first U.S steam locomotive?



2. What was a horse-drawn wagon on rails called?



3. What are horse-drawn wagons that travel on city streets called?



4. Another word for a plantation manager



Thank you so much whoever answers!!!Social Studies Questions about the North and South?, plz help?
i think the first one is like robert fulton or something idk and the last one i think is sharecropper