You must have been in a castle once. Castles remind us of the Middle Ages. In addition to castles, many monasteries were built during this period.
Do you know what a missionary is? These people are trying to convert you. In the period of the Middle Ages there were many missionaries in the Netherlands.
Did you know that the Romans made many inventions to increase agricultural yields? After this period, the farmers had to reinvent everything themselves.
Nowadays it is polite to call a man a 'gentleman'. In the past, few men were a gentleman.