Complex sentence: Historical evidence also points to the use of non-returning boomerangs by the ancient Egyptians, Native Americans of California and Arizona, and inhabitants of southern India for killing birds and rabbits., but were used in hand to hand combat by Indigenous Australians.
Split into simpler sentences: Historical evidence also points to the use of non-returning boomerangs by the ancient Egyptians, Native Americans of California and Arizona, and inhabitants of southern India for killing birds and rabbits. Indeed, some boomerangs were not thrown at all, but were used in hand to hand combat by Indigenous Australians.