You are given a sentence in Galician. Your job is to translate the Galician sentence into English.

Pero mirade, este é o mundo que o meu profesor me ensinou en 1960: aquí, mil millóns de persoas occidentais — alta supervivencia dos cativos, familias pequenas — e o resto, o arco da vella dos países en desenvolvemento, con grandes familias e alta taxa de mortandade infantil.
But look, this is the world my teacher talked about in 1960: one billion Western world here — high child-survival, small families — and all the rest, the rainbow of developing countries, with very large families and poor child survival.