After the great answer by /u/The_Alaskan in this thread, I wondered to what extent polygamy and marriage-related patriarchy (i.e. "selling" daughters into marriage) was a part of African culture by that point, and how much it was influenced by the slave trade taking away many marriage-aged males from the population.

EDIT: As pointed out by /u/asrafael, I should probably specify which African cultures I'm talking about. I guess my question is directed specifically at the larger cultural and ethnic groups in sub-Saharan Africa. So specifically, any insight into this effect on Hausa, Yoruba, Igbo, Mande, Luba, Mongo, Kongo, Zulu, Shona and/or Hutu culture would be much appreciated. As I'm from South Africa, special interest in Zulu and Shona cultures.