The correct answer is - Africa.
The Scythians are not considered as a single ethnic group, but instead as a confederation of multiple ethnic groups that had the same way of life, and adopted the same cultural traits. They were the dominant force for a long time in the Eurasian steppes, and at their pick they controlled a territory from the northern part of modern day Bulgaria to the western part of modern day Mongolia. These people were well known as nomads and as fierce warriors on horses. Their basis was probably in the north and eastern Iranian tribes, and as they were becoming more influential and stronger Mongolian tribes and maybe even some ancestors of the Turkic tribes were incorporated on the east, as well as Caucasian people and probably the ancestors of the Slavic people on the west.
