Meaning of なぜなら in Japanese

Definition of なぜなら

なぜなら(nazenara) 【何故なら】

(conj) because
聞いて驚くなよ！今日から俺はピアノを始めるんだ。なぜなら私は音楽の先生になりたいからだ！
Brace yourselves! From today I'm learning the piano. Why? Because I want to become a music teacher!

なぜならば(nazenaraba) 【何故ならば】

(conj) because; for; the reason why is ...
その会合は延期されました。なぜならばジョンが病気だったからです。
The meeting was put off because John was sick.

Because it is politics that has caused this war, making the war our everyday reality.

なぜなら、今年に５回かいも交通事故こうつうじこを起こしています。

If you want to know why, it's because I caused five car accidents this year.

だれもがジェレミーを尊敬そんけいしていますする。なぜなら彼かれは自分じぶんの責任せきにんをすべて果たすはたすからです。

Everybody respects Jeremy because he carries out all his responsibilities.

It was not his fault, for he did his best.

You mustn't touch it, because it'll break easily.

The meeting was put off because John was sick.

When the singer appeared on stage, the audience gave him the Bronx cheer, because he dumped his wife for another woman.

But Tuesday morning were different, because Tuesday was music day.

The obsequious waiter is usually assigned the best table because he always curries favor with his manager and superiors.

Nobody likes him, because he is always blowing his own horn.