se hicieron

were made; became

→ se
phrase Uncommon #15,237
were made; became Reflexive past form of hacer in these examples. It can mean that something was made/done, or that people changed into a new state or relationship.
SP: Con el tiempo, se hicieron muy buenos amigos.
EN: Over time, they became very good friends.

Tom y Mary se hicieron amigos en Facebook.

Tom and Mary became friends on Facebook.

Se hicieron herramientas con huesos de búfalo.

Tools were made from buffalo bones.

Esos descubrimientos se hicieron con fondos militares.

These discoveries were made with military funds.

Se hicieron buenos amigos.

They became good friends.

Él tenía dos hijos que se hicieron doctores.

He had two sons who became doctors.

Liszt y Chopin se hicieron amigos.

Liszt and Chopin became friends.

Las malas hierbas se hicieron con el jardín.

The weeds took over the garden.

Y todo porque estos idiotas se hicieron pasar por Hachas.

And all because these idiots posed as Hachas.

— Kung Fu Sion (2004)

Ellos se hicieron a la rutina.

They got used to the routine.

Tom y Mary se hicieron amigos de inmediato.

Tom and Mary became friends immediately.

Se hicieron de suficientes provisiones para tres años en la mar.

They stockpiled enough provisions to last three years at sea.

Los preparativos se hicieron en París.

The preparations were made in Paris.

— Cónclave (2024)

Los rebeldes se hicieron con el control de la capital.

The rebels took control of the capital.

Ya se hicieron los anuncios.

The announcements have already been made.

— Bhaag Milkha Bhaag (2013)

Rápidamente se hicieron amigos íntimos.

They quickly became close friends.

Estos no se hicieron para cocinar.

These were not made for cooking.

— Paddington 2 (2017)

Él tuvo tres hijos que se hicieron doctores.

He had three children who became doctors.

Se hicieron con tu ropa vieja.

They were made from your old clothes.

— American Splendor (2003)

Estos zapatos se hicieron en Italia.

These shoes were made in Italy.

Muchas personas se hicieron paso hacia la salida trasera.

Many people made their way to the back exit.

Tom y María se hicieron abogados.

Tom and Maria became lawyers.

Ellos se hicieron famosos después del accidente.

They became famous after the accident.