The Americans were able to win such an overwhelming victory at Trenton because they used surprise tactics. Washington moved troops over the Delaware river at night on Christmas, and surprised the enemies in the morning!
The answer is the last oneD
They exposed the dangers and corruption of industrial life to the public.
Put the comma between shortcut and so
there was an intense rivalry among trading companies of different european companies because every european company wanted to buy products from india at a cheap rate and sell them in their country at a higher price .