A prairie schooner is just a fancy name for a covered wagon, which was used to bring people and/or goods across land.
The American Revolution began in 1775
because Venus is in a constant storm, also it has a very thick atmosphere where a rover couldn't get through. Mars has i light atmosphere where a rover can land safety.
if you want to learn more got to Nasa.gov
Answer:
I think they sank US ships and attacked US territory
