Tanzania granted the largest-ever mass citizenship to refugees. Then what?

Thirty-six years ago, when Mr. Nzila was a young refugee from Burundi, he’d planted two tiny green saplings here as a kind of prayer that he would be in one place long enough to see them grow. At school, they wore sweaters in the colors of the Tanzanian flag, memorized Tanzanian history, belted the Tanzanian national anthem. For Nzila, becoming Tanzanian had been a slow accumulation of experiences.