Alexina did not bother to contest the authenticity of the thick paper trail that documented her sale to James White. If the court agreed that she was white, those contracts would automatically be rendered invalid and she would be free.
You can point at that map and see that the ebbs and flows are not just related to the desires or needs of people from other parts of the world emigrating to the United States. The shape of the map is driven by US policies, and whether they were welcoming or not welcoming to groups of immigrants.
These political and social crises—whether the plunder of Egypt by Israelites or the looting by African Americans in Baltimore—have apocalyptic desires within them.
Would photographic documentation of inner life indicate the sameness and equality of Afro-Brazilians, loyal citizens in the making, or catalog their essential difference as an irredeemable and politically dangerous other, an other occupied by foreign powers?