That's really interesting, and UMass sounds like a really solid program. I grew up in the Central African Republic where my parents worked as medical missionaries, so I fell in love with the region pretty early on. I've been doing work in missions and gender history for my honors thesis, (self-funding research trips, since my undergrad college doesn't have much funding to help out) and I'm mostly interested in the C.A.R, D.R.C, and Cameroon. I'd be willing to expand to East Africa if that's what it took to get into a PhD program, a lot of interesting study there too. But I really feel that Central Africa as a region is way understudied, and ideally I'd like to focus there. Tough to find a good fit though, my early picks would be Wisconsin, Northwestern, Oxford, Yale, Michigan State, Michigan, and Boston U. Pretty exclusive group though, so I'd have to really kill it on the GRE, although I have good grades and recommendations and a couple of conference presentations coming up. As far as topics within the region, I'm interested in missions, religious syncretism, slavery, and gender issues, among other things.
Do you have a specific topic or idea for your PhD, or have you not gotten that far along yet? I'd be interested to read your bio of Lumumba if you ever post it publicly...what a sad story that whole situation was. Also sad that your adviser had to switch his specialization because of political turmoil. I guess in a sense it'd be refreshing to switch it up a little, but after years (decades?) working in an area you love, that's tough.