“…By the end of the 20th century, more than 80% of the population lived in cities; the share of manufacturing jobs, which peaked in the 1980s, was already in decline; and most workers, now including many more women than before, were employed in the service sector (Comin, 2019;Guimarães, Brito, & Barone, 2019;Scalon, 2013). Around the same period, cohabitation became widespread (Esteve, Lesthaeghe, et al, 2016;Esteve, Lesthaeghe, & López-Gay, 2012) and the total fertility rate decreased from more than 6 children per woman to below replacement level (Potter et al, 2010). Access to primary education became universal towards the end of the last century and, both in absolute and relative terms, enrollment in tertiary education more tripled between the 1990s and the 2010s (Lam & Marteleto, 2002;Salata, 2018); which means that spending a significant amount of time in the educational system, especially around ages when romantic relationships are formed, became much more common for younger cohorts.…”