amy ▁soil ▁supported ▁rich ▁cot ton ▁plant ations . ▁During ▁World ▁War ▁II , ▁Long horn ▁Army ▁Am mun ition ▁Plant ▁was ▁established ▁on ▁the ▁site . ▁In ▁ 1 9 9 3 , ▁the ▁importance ▁of ▁the ▁wet lands ▁surrounding ▁C add o ▁Lake ▁was ▁recognized ▁at ▁the ▁R ams ar ▁Convention , ▁as ▁the ▁area ▁was ▁one ▁of ▁th ir teen ▁in ▁the ▁US ▁that ▁were ▁de emed ▁to ▁be ▁of ▁" intern ational ▁significance ". ▁The ▁N WR ▁was ▁author ized ▁in ▁ 2 0 0 0 ▁to ▁protect ▁the ▁bottom lands ▁of ▁the ▁Harrison ▁Bay ou . ▁ ▁References ▁ ▁Show down ▁at ▁C add o ▁Lake ▁ ▁External ▁links ▁ ▁Category : National ▁Wild life ▁Ref ug es ▁in ▁Texas ▁Category : Pro te cted ▁areas ▁established ▁in ▁ 2 0 0 0 ▁Category : Pro te cted ▁areas ▁of ▁Harrison ▁County , ▁Texas ▁Category : 2 0 0 0 ▁establish ments ▁in ▁Texas <0x0A> </s> ▁A ▁regional ▁lock out ▁( or ▁region ▁coding ) ▁is ▁a ▁class ▁of ▁digital ▁rights ▁management ▁prevent ing ▁the ▁use ▁of ▁a ▁certain ▁product ▁or ▁service , ▁such ▁as ▁multimedia ▁or ▁a ▁hardware ▁device , ▁outside ▁a ▁certain ▁region ▁or ▁territory . ▁A ▁regional ▁lock out ▁may ▁be ▁enfor ced ▁through ▁physical ▁means , ▁through ▁techn ological ▁means ▁such ▁as ▁detect ing ▁the ▁user ' s ▁IP ▁address ▁or ▁using ▁an ▁ident ifying ▁code , ▁or ▁through ▁un intent ional ▁means ▁introduced ▁by ▁devices ▁only ▁supporting ▁certain ▁regional ▁techn ologies ▁( such