Previous to four-thousand years ago, Sanatana Dharma (Vedic civilization) was the commonly shared world-view of all the Indo-European peoples, stretching from Ireland to South-East Asia, and including every nation in between.
Sanatana Dharma is not "foreign" to ancient Europe.
On the contrary, Vedic civilization was the very foundation of early Western civilization.
Sanatana Dharma is the ancient heritage of all European people!