I would think that writing about the diffenernt groups that have migrated tot he US onver the centuries would be good.
British, Spanish, French, Ducthc colonist.
salves tranported in
Pilgrims for releigiosu freedom
Irish during potato famine
Itiaialn
jews during WWII
Mexicans when we took over Texas and California from them
chinise who bulity the transcontential railroad
Korean and Vietness after the wasrs their
Port Ricians after US beame owner of it
Cuban refugees after Castro took over
The German scientsit who the US wanted after WWII - even ignoring those who were NAZI's if they had technical knowledge.