Never mind that Rwanda was among the poorest countries in the world, or that less than 2 percent of its population got as far as high school. Here in the center of francophone Africa fresh baguettes were baked each morning, luxuries such as phones worked, which they rarely did in English-speaking African countries, and frothy brown Guinness beer was available. One tall billboard in the capital, Kigali, advertised its potency: male and female hands, decorated with gold rings and red nails, clink together pints of frothy Guinness under the promise “The Power of Love.”