Final answer:
People left Africa and moved to other lands during the Neolithic Revolution primarily due to changes in climate and the need for food resources. The shift from hunting and gathering to agriculture provided the means to feed larger populations and led to the establishment of permanent settlements.
Step-by-step explanation:
The Neolithic Revolution, which marked the shift from hunting and gathering to agriculture, led to people leaving Africa and moving to other lands primarily due to changes in climate and the need for food resources. As the climate in Africa became drier, there were fewer plants and animals available to sustain human populations. Therefore, people had to seek new lands where the conditions were more conducive to agriculture and food production.
The development of agriculture provided the means to feed larger groups of people, which led to the establishment of permanent settlements and the support of larger populations. This allowed human civilization to thrive and gave rise to the emergence of sophisticated Neolithic settlements around the world.