Complex sentence: Between 1365 and 1369, Vidin was occupied by the Kingdom of Hungary and the ruling family was held captive in the castle of Humnik (in Bosiljevo, today's Croatia), where they were forced to convert to Catholicism.
Split into simpler sentences: Between 1365 and 1369, Vidin was occupied by the Kingdom of Hungary. The ruling family was held captive in the castle of Humnik (in Bosiljevo, today's Croatia), where they were forced to convert to Catholicism.