se formó

was formed

→ se
phrase Rare #28,506
was formed The reflexive form of formar; it can describe something coming into existence, developing, or being created. The examples use the present-tense forms se forma and se forman.
SP: La ciudad se formó alrededor del puerto.
EN: The city was formed around the port.

Un vago, pero se formó en la Escuela Militar de la Independencia.

A loafer, but he trained at the Independence Military School.

— Asesinos (2015)

Este agujero se formó por la caída de un meteorito.

This hole was formed by the fall of a meteorite.

Las teorías se basan en hechos, ¿sabes cómo se formó el lago de Itomori?

Theories are based on facts. Do you know how Lake Itomori was formed?

— Your Name (2016)

Nuestro equipo se formó la semana del juego.

Our team was formed the week of the game.