Individualism

"There's good evidence that Europe's kinship structure was not much different from the rest of the world," said Jonathan Schulz, an assistant professor of economics at George Mason University and another author of the paper. But then, from the Middle Ages to 1500 A.D., the Western Church (later known as the Roman Catholic Church) started banning marriages to cousins, step-relatives, in-laws, and even spiritual-kin, better known as godparents.«Mapping the end of incest and dawn of individualism». November 8, 2019 by Caitlin McDermott-Murphy, Harvard University
See atomism.
Individualism and the Trinity.
References