What helped people during the great glaciation?

About 100 thousand years ago, when glaciation began, only the strongest people survived. The most weather-resistant were those who were able to withstand the fire. Also during this period, primitive people were helped by caves and yurts, insulated with the fur of captured animals. People who lived in this period learned how to process animal skins and make clothes, shoes, houses and warm places to sleep from them. The increased skill of hunting made it possible to bring large prey to the tribe, such as mammoths, saber-toothed tigers, bison, deer.