In one theory, what led humans to move north into europe?

According to scientific or archaeological study, one theory, that led humans to move north into Europe is that the Ice Age ended and the planet warmed up.

The Implies that at a time when the planet earth is cooling down which is over 2 million years gos  Humans (or homô sapaiens ) during this period were constantly looking for more foods and hunting expedition. This period is known as Ice Age, and it witnessed many humansfrom Africa who eventually migrated toward europe as a result of climatic factors such as droughts, atural disasters, and natural resources, etc.

Hence, it can be agreed upon that based on scientific or archaeological study, one theory, that led humans to move north into Europe is that the Ice Age ended and the planet warmed up.

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i think they came to washington to protest