Let's talk about the past!

Pour évoquer une époque révolue,  plusieurs outils sont à  notre disposition.

People used to write letters whereas nowadays, they tend to prefer emails.

They didn't use to work on computers and they didn't use to rely on teamwork/ work in a team.

In the 1950s/ In those days / Back then / Long ago/ Formerly/Before + nom / Before + S + verbe conjugué.

"Before, .... " n'est pas correct.