▁activities ▁against ▁the ▁security ▁of ▁the ▁American ▁republic s ,” ▁but ▁now ▁that ▁the ▁threat ▁had ▁passed . ▁In ▁ 1 9 4 6 ▁the ▁US ▁State ▁Department ▁asked ▁E cuador ▁if ▁it ▁would ▁like ▁those ▁remaining ▁in ▁intern ment ▁cam ps ▁to ▁return . ▁E cuador ▁took ▁control ▁of ▁its ▁residents ▁in ▁April ▁ 1 9 4 6 ▁when ▁an ▁agreement ▁was ▁final ized ▁and ▁E cuador ian ▁residents ▁began ▁to ▁return ▁home . ▁ ▁Cuba , ▁Peru , ▁and ▁Gu atem ala ▁ ▁For ▁the ▁Cub an ▁and ▁Per uv ian ▁residents ▁intern ed ▁in ▁America ▁efforts ▁to ▁return ▁home ▁were ▁often ▁impro b able ▁at ▁best . ▁Begin ning ▁in ▁ 1 9 4 0 ▁the ▁American ▁government ▁took ▁to ▁black list ing ▁companies ▁and ▁individuals ▁with ▁German ▁t ies ▁from ▁these , ▁and ▁most , ▁Latin ▁American ▁countries . ▁The ▁stated ▁r ationale ▁was ▁to ▁den y ▁fund ing ▁to ▁local ▁Naz i ▁sympath izing ▁fa ctions , ▁however ▁the ▁reality ▁was ▁that ▁these ▁American ▁policies ▁made ▁it ▁increasing ly ▁difficult ▁for ▁any ▁German ▁d eta ine e ▁to ▁return ▁to ▁their ▁family ▁and ▁home . ▁A ▁nice ▁side ▁effect , ▁for ▁Washington , ▁was ▁of ▁course ▁the ▁fact ▁that ▁in ▁many ▁cases ▁these ▁German ▁companies ▁were ▁their ▁greatest ▁compet itors ▁in ▁the ▁region , ▁so ▁these ▁black lists ▁effectively ▁created ▁American ▁mon opol ies ▁in ▁certain ▁indust ries . ▁ ▁By ▁the ▁end ▁of ▁the ▁war , ▁those ▁held ▁in ▁intern ment ▁cam ps ▁were ▁either ▁sent ▁to