isis is a very controversial islamic extreamiest group they are well known in the world but not for the right reason. They are known for the way they get their point across and  what they have done to do this and what they would do if it was viewed in a wrong way for example public exucutions and videoing beheadings and then posting itethier online or making sure it reaches news coverage, by them doing this it caused the locals of the cites that isis had power of to become scared and frightned some would be afried to even come out of their house as the moment they step outside their house their lives would be at risk. Most of the time isis would use the fear of the people and all teir anger and take it out on the public , locals and the world

Isis works in a certain way a way such as how a country would work as many countries it has a primister and a cabinet and local leaders which keep the cites which they run in check. By it being run like this its secerutiy is highly advanced and efficient, Also millions of dollars in oil revenue this has made isis one of the wealthiest terror groups in history, experts estimate the value output from the dozen of oil fields and refines under its control in Iraq and syria at 1 million to 2 million dollars a day.