Homo erectus is the first to stand completely straight up, also they were the first to make fire and they started making very complex tools and were the first to start leaving Africa, when they left they traveled to Kenya, Spain, China, and Indonesia. Some of my sources are https://sites.google.com/arlington.k12.ma.us/ehresearch/home, https://ytcropper.com/cropped/y25bbcd5f1902ef, and http://www.perfettaletizia.it/archivio/infomazione/evoluzionismo/inglese/Homo/Homo_erectus.htm. The Homo Erectus were one of the first to leave Africa and still had evolving brains but not as big than the Homo Sapiens.
