Final answer:
The first female Homo erectus pelvis was discovered in East Africa, marking a crucial find for understanding human evolution.
Step-by-step explanation:
The first female Homo erectus pelvis ever found was in East Africa. H. erectus is an important species in human evolution, known for being the first hominin species to have migrated out of Africa. Found across regions such as India, China, Java, and Europe, Homo erectus had features that were more similar to modern humans compared to earlier hominins such as H. habilis. With a larger brain averaging 775 to 1100 cubic centimeters and a body size comparable to modern humans, H. erectus represented a pivotal point in the evolutionary timeline, exhibiting reduced sexual dimorphism, advanced tool-use, and the possible use of fire. Their fossils, which have been discovered alongside various artifacts, have contributed to the understanding of Early Stone Age cultures.