Britain and Germany both signed the treaty
Answer:
Interchangeable parts, popularized in America when Eli Whitney used them to assemble muskets in the first years of the 19th century, allowed relatively unskilled workers to produce large numbers of weapons quickly and at lower cost, and made repair and replacement of parts infinitely easier.
Explanation:
I know Ellis Island is a major immigration station in New York... Is there a specific time period though?
