Denisovans are another proto human group from southeast Asia. They evolved in an area with a lush environment and temperate climate. Their predators were impossible to fight, so they developed a hive like communal structure of society, evolving smaller and less focused on individual survival and more on breeding and hard survival. Africans had a lush temperate environment, with fightable predators. Their issue was resource territory. They developed heavy breeding, higher aggression, and quick twitch muscles to compete with other tribes. Their enemy was each other. Neanderthals fought the environment. They developed small tight knit family groups with broader territory to support them as the environment was harsh. They increased brain capacity to develop long term planning, spatial awareness, and critical thinking skills to survive the winters.