t is a well-known and established historical fact that a ProtoEuropean people moved into and conquered the Mohenji-Daro Valley of northern India around 2500 B.C.E. These people, who were called the Aryans from the Sanskrit word meaning 'noble,' established the Hindu religion and the Varna institution of castes as a system of racial separation to keep their descendants from interbreeding with the native Dravidian blacks, as eventually happened. Today the Brahmin, or highest priestly caste, has the highest admixture of ProtoEuropean blood. Other branches of the Aryans moved into Tibet and Iran, which was also named for them,but these were by no means the earliest of Caucasoid migrations eastwards into Asia and prohaps up to Russia( Siberia)
However White people could have also Travelled from Norway or Sweden across to Russia( Siberia) and then to Alaska into Canada and USA.