Answer:
No suba el sonido, por favor. No me gusta escuchar los anuncios.
Ser is used to talk about WHAT something is
Estar is used to talk about HOW something is
You have to the objectivity of the information that the author presents.
Los judíos decidieron emigrara por que si no se convertían al cristianismo, los mataban. les dieron un tiempo determinado para salir del país.
The Jews decided to emigrate because they did not convert to Christianity, they killed them. He gave them time to leave the country.
In the first part of the answer is in spanish, i hope this can help you.