Select ALL the correct answers. What two factors led to the US being considered a powerful nation during World War I?

The Treaty of Versailles turned the US into a peacekeeping nation.
The advancement of US military weapons was greater than any other country.
The Battle of Amiens was a turning point in the Allies' favor following US entry.
The economic strength of the US-led to greater respect from leaders of other countries.
The battle of Belleau Wood proved to the world the strength of the US armed for