Final answer:
During the period of rapid brain size expansion in the genus Homo, the development of culture and technology as behavioral adaptations for exploiting the environment occurred. One of these changes is the development of culture and technology as behavioral adaptations for exploiting the environment.
Step-by-step explanation:
During the period of rapid brain size expansion in the genus Homo, several other significant changes are thought to have occurred. One of these changes is the development of culture and technology as behavioral adaptations for exploiting the environment. These developments, made possible by a larger, more complex brain, allowed modern humans and their recent ancestors to occupy virtually the entire world and become the dominant land animals.
It seems like part of your question might be missing. However, if you are referring to brain size expansion in the context of human evolution, one important aspect associated with the enlargement of the brain is increased cognitive abilities. The expansion of the brain, especially the development of the neocortex, is thought to be correlated with enhanced cognitive functions, including higher-order thinking, problem-solving abilities, language development, and social complexity. The increase in brain size and complexity over evolutionary time is hypothesized to have contributed to the advanced cognitive abilities observed in humans. It's important to note that brain size alone is not the sole determinant of intelligence or cognitive capabilities, and factors such as neural connectivity, organization, and the development of specific brain regions also play crucial roles in cognitive function.