I think "many more that were fought by any other country " is flawed both logically and grammatically. What the author really wanted to express is: many more than that that were fought by any other country.
Am I on the right track?
Context:
America Loves
WAR!
America Loves
KILLING!
America Loves
Oppression!
By: George Feigley
Cofounder
No place on Earth is like the United States. At this writing (2006) it's been a country for 230 years. In that time it's fought countless wars, many more that were fought by any other country on the planet.
That is a typo I often make myself. It's easily done.
A useful clue for me. The most common typo by native English speakers that I've seen for years is "then" for "than." For quite a while I was always stunned by it, wondering why the natives would make such naive mistake.