Complex sentence: Under the foreign kings who occupied the throne of Hungary on the extinction of the house of Arpad, the Hungarian Jews suffered many persecutions; and at the time of the Black Death (1349) they were expelled from the country.
Split into simpler sentences: Under the foreign kings who occupied the throne of Hungary on the extinction of the house of Arpad, the Hungarian Jews suffered many persecutions. During the time of the Black Death (1349), they were expelled from the country.