After Japan attacked Perl harbor Americans put Japanese citizens from USA to concentration camps and took away their rights because they thought there were spies on Japan but in the end there wasn’t a spy and when they were released from the camps they had nowhere to go.
Answer:
The various cultures collectively termed "Mound Builders" were inhabitants of North America who, during a 5,000-year period, constructed various styles of earthen mounds for religious, ceremonial, burial, and elite residential purposes.
A) Did it on Edu ! HOPE YOUR HAPPY
The name is Pre-Cambrian era