Narrow the world's Kiva loans by development need, then borrower, then sector.
Start with the World Bank income group, then focus the search on the most socially pressing places. (These describe the country — a national average — not the individual borrower.)
Focus on countries where women face the most inequality (Gender Inequality Index).
Focus on the hungriest countries (moderate-or-severe food insecurity).
Focus on where most women die in childbirth (deaths per 100,000 births).
Focus on where fewest people have access to electricity.
Focus on the most unequal societies, where growth is least shared (Gini index).