Learn German: Da niemand das Manuskript liest, gibt es viele Fehler. - Since nobody is reading the manuscript, there are many errors.

Both da and weil mean "because" or "since" and send the verb to the end of their clause. However, da is preferred when the reason is placed at the beginning of a sentence to establish background context, much like "since" or "given that" in English. weil is more typically used when introducing new information where the reason itself is the main point.

Why is the word order gibt es instead of es gibt after the comma?

In a German main clause, the conjugated verb must take the second position. The entire subordinate clause (Da niemand das Manuskript liest) counts as position one. Therefore, the verb gibt must come immediately after the comma in position two, which pushes the subject es into position three.

Does the pronoun niemand change if it's used in a different case?

Here it is the subject (nominative), so it is niemand. In the accusative and dative cases, you will often see the declined forms niemanden and niemandem. However, in modern German, it is also perfectly acceptable and common to leave it undeclined as niemand across all cases.

How do we know Fehler is plural in this sentence?