Misc: Which continent was the original home to the humble potato?

Questions

What was the hometown of Casey's baseball team in the poem "Casey At The Bat"?

What was the invasion password for WW II's D day invasion of Normandy, France on June 6, 1944?

What was the leading cause of death in the late 19th century?

What was the location of the first official ufo sighting?

What was the martial song of the confederacy in US Civil war?