Learn Spanish (Latin America): Dado que esta sucursal cerrará, vamos a abrir otra. - Given that this branch will close, we are going to open another.

Even though "given that" can sometimes feel like a hypothetical condition in English, dado que introduces an established fact or an objective cause. Because the speaker is declaring this closure as a reality that explains the next action, it requires the indicative.

Could I use ya que or puesto que instead of dado que in this sentence?

Yes, they are mostly interchangeable here as causal conjunctions meaning "since" or "because." Dado que and puesto que are slightly more formal than ya que. You will often see dado que used in business or administrative contexts to present a logical premise for a decision, making it a perfect fit for talking about closing a company branch.

Why is it just otra at the end and not una otra for "another"?

In Spanish, the word otro or otra inherently means "another." Adding un or una before it is a common mistake English speakers make by translating word-for-word. Notice that otra is feminine here because it stands in for otra sucursal.

What kind of "branch" is a sucursal?