Picture Books on Global Poverty

I want to compile a list of ten excellent fiction picture books set in ten different countries that inspire compassion and a desire for justice. So far I have the wonderful Four Feet Two Sandals by Karen Lynn Williams and Khadra Mohammad, a lovely story about two friends in a Pakistani refugee camp, and One Hen: How One Small Loan Made a Difference, a tale about microcredit set in Ghana, written by Katie Smith Milway. Any other suggestions?