What event caused the US to have the interment camps?​

Analyzing napoleon's empire french empire (1812) based on this map, which statement best describes napoleon's empire in 1812? great britain russian empire prussia grand duchy confed. of warsaw of the rhine austrian empire the french empire covered all of europe. napoleon had lost control of major ports. napoleon controlled most of europe. the french empire had declined. paris italy france in 1799 added to napoleon's empire by 1812 allied with napoleon's empire in 1812 intro done