Complex sentence: During the 19th century the city, known by its German name Aussig, became heavily industrialized and due to the large-scale immigration the number of inhabitants grew from 2,000 to over 40,000 making Aussig one of the biggest cities in Bohemia.
Split into simpler sentences: During the 19th century the city, known by its German name Aussig, became heavily industrialised. Due to large-scale immigration the number of inhabitants grew from 2,000 to over 40,000, making Aussig one of the biggest cities in Bohemia.