estuvimos fortaleciendo
-we were strengthening
Preterite progressivenosotrosconjugation offortalecer.

fortalecer

Al mismo tiempo, estuvimos fortaleciendo nuestra relación con los grupos e individuos que se convirtieron rápidamente en nuestros aliados Terrestres.
At the same time, we were strengthening our relationship with the groups and individuals that were quickly becoming our Earth allies.
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