Event Two was the spread of the lineage that gave rise to all later hunter-gatherers in Europe. Fu’s Four Population Tests showed that both an approximately thirty-seven-thousand-year-old individual from eastern Europe (present-day European Russia)23 and an approximately thirty-five-thousand-year-old individual from western Europe (present-day Belgium) were part of a population that contributed to all later Europeans, including today’s.24 Fu also used Four Population Tests to show that during the
