Thirty Years of Research On Race Difference in Cognitive Ability, aggregates over a dozen studies from the past few decades, looking at everything from twins raised in different environments, the effects of adoption, location of the population, etc, using everything from multiple IQ tests to the ASVAB.
https://www1.udel.edu/educ/gottfredson/30years/Rushton-Jense...
Its worth reading and answers your question, while refuting the OP above