Before 10,000 years ago, for some parts of North America, Northern Europe and northern Asia, and pockets of areas, where the altitudes were high (eg the Swiss Alps, the Caucasus, the Himalayas and Tibetan plateau, the Andes, etc), ice sheets would cover these regions.
These people living in these regions would have live the nomadic lifestyle, of hunting and gathering. They would have to find and follow their preys, or else starve.
The glacial periods can last from anywhere between few thousands of years or hundred or more thousands of years.
But the ice age didn’t cover the whole Earth’s surfaces.
Even extensive regions that were not covered by ice sheets, suffered through cooler climates and long periods of droughts. The people in these regions would have lived lives as hunting and gathering nomads.
It was only when the last and most glacial period ended, after 10,000 years, that farming crops were made possible, and people can settled in more permanent settlements (eg villages, towns). They have also learned to make ceramic wares, in which they could store food and water. This was known as the Neolithic Revolution.
The earliest settlement in Jericho was one of the oldest town. This Jericho predated the supposed creation of Adam, by 4000 to 5000 years.
