1792 याव ब्रिटेइननि केप्टेइन जर्ज भेनकभारानो अवासिंटन बोरिमा आरो लैथोदैनि हान्था मेलानि आबुं नायबिजिरसंग्रा सेथि इउरपियान जादोंमोन ।
In 1792 Captain George Vancouver of Britain became the first European to complete a detailed survey of the Washington coast and the inland waters .