By migrating to areas which were warmer and contained food.
was it a change of weather, while traveling/migraiting
a man can not survive for a week without water
Early man survived as hunter-gathers before becoming farmers, roughly 10,000 years ago at the end of the most recent iceage.
Obviously not or we would not be referring to them as "early" civilisations.
to survive
The greatest threat to the kingdoms was from defeat in war. Most of the early kingdoms did not survive, as those that did survive destroyed the others.
yes there was someone who was 4 months early
forces of nature
The life of early man compares to man today in a few ways. One difference is that early man did not have the high sugar diet.
They probably moved to warmer places that are more suitable for living, or they hunted down animals for their skins to keep them warm in the harsh and cold climates.
Fire was sacred to early man, without it they could not craft the tools they needed to survive, nor cook meat, or be warm during winter.