Walking on two legs. I'm not sure what else.
Australopithecines can be distinguished from robust Australopithecines by their smaller size and more gracile (slender) jaw and teeth. Robust Australopithecines, on the other hand, have larger bodies, more robust skull features, and large, thickly enameled molars for chewing tough vegetation.
Gorillas and chimps weren't around when the Australopithecines was
NO
The Australopithecines did not have religion or ceremonies. The earliest evidence for brain development sufficient to allow symbolic behaviour and these kind of behaviours is associated with Neanderthal which appeared 600,000 years after the last Australopithecines disappeared.
Australopithecines walked upright on two legs (bipedalism) and had a more human-like head shape, with a larger brain and flatter face, compared to apes. These characteristics helped distinguish them from their ape ancestors and indicated a transition towards more human-like traits.
Homo erectus coexisted with several species of australopithecines including Australopithecus afarensis, Australopithecus africanus, and possibly Australopithecus garhi. These australopithecines lived before the appearance of Homo erectus and were part of the evolutionary lineage that eventually led to humans.
Australopithecines had adaptations such as upright posture, walking on two legs (bipedalism), and dental structures suitable for a varied omnivorous diet. They also had a smaller brain size compared to modern humans and strong jaws for chewing tough plant materials.
they didnt invent anything
It's commonly thought that Australopithecines had no language ability. But even if they did, we would have no way of knowing anything about it, since it would not have been written.
Australopithecines appeared on Earth before Homo habilis, Neanderthals, and Homo sapiens.
The plural form of Australopithecus is Australopithecines.