Three black seats is the most you can possibly draw, one in Baltimore and two in the Prince Georges area. 4 would require plurality seats which the VRA most likely wouldn't permit.
VRA courts would absolutely permit a black plurality seat of like 45% in Maryland.
that would almost certainly elect a black in somewhere like Maryland unlike MS.
No, it's not the general to worry about, it's the primary.
Yes, a 40% black district would elect a democrat. But would a black democrat get through the primary? Probably not.
Also, we're not talking 45% black seats. With tortured borders you could *maybe* get 4 seats more than 40% African-American. Maybe.