Complex sentence: Shah Jahan gave orders in 1631 to Qasim Khan, the Mughal viceroy of Bengal, to drive out the Portuguese from their trading post at Port Hoogly, the trading post was heavily armed with cannons, battleships, fortified walls, and other instruments of war.
Split into simpler sentences: Shah Jahan gave orders in 1631 to Qasim Khan, the Mughal viceroy of Bengal, to drive out the Portuguese from their trading post at Port Hoogly. The post was heavily armed with cannons, battleships, fortified walls, and other instruments of war.