I believe the answers are 1 and 3
Answer: The IWW's goal was to promote worker solidarity in the revolutionary struggle to overthrow the employing class.
EMpires used trade for all sorts of reasons a few were to get and sell goods. Another was to exchange information and news. This also connected people far and wide from the main part of the empire. It was easier to rule empires when trade was established
They were important because they were not controlled by the government or the church. Therefore they were free to explore in scientific experiments as much as they wanted without these controls.
