If we were to go 400 years into the past to Western Europe, which even then, was one of the more literate parts of the planet, you would see that about 15 percent of the population knew how to read.
Se recuarmos 400 anos na história da Europa Ocidental que, já nessa altura, era uma das zonas do planeta mais literárias, podíamos ver que apenas 15% da população sabia ler.