▁and ▁we ▁everywhere ▁were ▁weak ▁and ▁n aked ". ▁ ▁Through out ▁the ▁war , ▁Pear l ▁Har bor ▁was ▁frequently ▁used ▁in ▁American ▁propag anda . ▁ ▁One ▁further ▁consequence ▁of ▁the ▁attack ▁on ▁Pear l ▁Har bor ▁and ▁its ▁after math ▁( not ably ▁the ▁N ii h au ▁incident ) ▁was ▁that ▁Japanese - American ▁residents ▁and ▁citizens ▁were ▁re located ▁to ▁nearby ▁Japanese - American ▁intern ment ▁cam ps . ▁Within ▁hours ▁of ▁the ▁attack , ▁hundreds ▁of ▁Japanese - American ▁leaders ▁were ▁rounded ▁up ▁and ▁taken ▁to ▁high - security ▁cam ps ▁such ▁as ▁Sand ▁Island ▁at ▁the ▁mouth ▁of ▁Hon ol ulu ▁har bor ▁and ▁K ila ue a ▁Military ▁Camp ▁on ▁the ▁island ▁of ▁Hawai i . ▁Event ually , ▁more ▁than ▁ 1 1 0 , 0 0 0 ▁Japanese ▁Americans , ▁nearly ▁all ▁who ▁lived ▁on ▁the ▁West ▁Coast , ▁were ▁forced ▁into ▁interior ▁cam ps , ▁but ▁in ▁Hawai i , ▁where ▁the ▁ 1 5 0 , 0 0 0 - plus ▁Japanese ▁Americans ▁composed ▁over ▁one - third ▁of ▁the ▁population , ▁only ▁ 1 , 2 0 0 ▁to ▁ 1 , 8 0 0 ▁were ▁intern ed . ▁ ▁The ▁attack ▁also ▁had ▁international ▁consequences . ▁The ▁Canadian ▁province ▁of ▁British ▁Columbia , ▁border ing ▁the ▁Pacific ▁Ocean , ▁had ▁long ▁had ▁a ▁large ▁population ▁of ▁Japanese ▁imm igr ants ▁and ▁their ▁Japanese - Can ad ian ▁descend ants . ▁Pre - war ▁t ensions ▁were ▁ex ac erb