Final answer:
Homo erectus is considered the first hominin group to migrate to Europe and Asia from Africa, starting between 1.8 and 1.5 million years ago. This movement is a significant factor in the evolutionary history of hominins and the spread of human populations across the globe.
Step-by-step explanation:
The earliest hominin group considered to have migrated to Europe and Asia was Homo erectus. Beginning between 1.8 and 1.5 million years ago, this species embarked on its migration out of Africa, following resources and adapting to new environments. The group exhibited skill in utilizing their surroundings, developing new subsistence systems, and they proliferated over time into different regions. This led to the diversification of human species, including Homo neanderthalensis (Neanderthals) and eventually modern humans, Homo sapiens.
Homo ergaster is another important hominin that is considered to have left Africa around 1 million years ago, and it's thought that they gave rise to populations of Homo erectus found further afield in regions such as Europe and Asia. These early migrations were significant in shaping the evolutionary path of hominins and the development of human civilizations across continents.