I think if all aspects of our race skin color, height, intellectual abilities is the result of human simply trying to survive and thrive in our environments, how can any race marginalize another? How does any racist group like BLM or the KKK have a leg to stand on?
I too have been fascinated by genetics since college. In 1959 I was taught that we all have 8 genes for color. If a pure white person and a pure black person mate, they will have a brown child with 4 white and 4 black genes. However if two people with that combination mate they could have anywhere from an 8 gene white child to an 8 gene black child, or any combination in between. However, the majority of the children would have a 4/4 or 5/3-3/5 distribution. The recent science of epigenetics has found that some environmental influences, like poor nutrition, of a grandparent can influence the well being of a grandchild.
After decades of observation I have concluded there are two main types of people, settlers/farmers and nomads/travelers. I also call them domesticated or wild types. I have always been attracted to the wild types.
America was mostly settled by nomad/wild types. In the families of Europe, only some family members were of the traveling disposition. The settling type usually stayed home unless conditions were very bad. In addition transportation by England of prisoners of war (Scotch and Irish) and political/religious rebellions was practiced. Also many felons and debtors were transported, sold, or indentured. One observer after commenting on how many fair and refined looking women he had seen in America was told the transportation of many “public women” to America was the reason. Thus many of these involuntarily transported might not have been of the nomad type. As the east coast became urban and settled, the more restless continued to move west which may explain some of the current regional political differences. When they got to California, they either settled down there, or if the nomad type went off to Alaska after gold, or back into the Rocky Mountains. These are extremely long and detailed articles on the subject. They include differentiating of Indenture, Transportation, and Slavery:
https://www.encyclopediavirginia.org/Convict_Labor_During_the_Colonial_Period
There are many factors that can affect regional IQ. Gengis Kahn’s murder of millions in Central Asia and parts of the Middle East still has lingering effects on their populations. The sequestering of women and arranged cousin or uncle marriages cannot be doing IQ’s any favors. The theft of 20 million Africans by slavers cannot have done that continent any good. I too have spent some time analyzing my family. One of my sons was severely dyslexic, but very charming. One day when he was 13, 5 girls phoned home while he was not home. When he arrived, I asked if he was dating all these girls. “Oh no, just two, the others I’m holding in reserve if things don’t work out.” A few years later when he dropped out of high school and was depressed, I told him that with his people skills he could do OK, because he could always get someone (probably a woman) to do his paper work for him. He married a college graduate and tells me one of his sons is a “social genius.” My brother and husband were also dyslexic, but very effective socially. My brother and son are fair haired and my husband a redhead. My other brother, son, and myself are dark haired and don’t have reading problems. As I said genetics is fascinating.