>>13510846because east europeans mostly came from iranian tribes
scythians/sarmatians/roxalani
yes slavs originated directly from aryan sarmatians, while most of germans originated from PIE, not aryans technically
most r1b left steppes like 7000 years ago and travelled west and south(those were the ones who created egypt) while half of r1a went southeast and the other half stayed on steppes/settled its direct neighbourhood to the north/west
PIE were all either R or its closely related Q