The Reversed Life

Hi. My name, is Katie Moore. I'm 15 years old, I have a younger brother, Bryant, he's 11. We live with our parents in a small city named Sachem. It's a very vibrant city but, not a lot of things happen anymore. 20 years ago, Sachem was always full of music from iPhones, iPads, Samsungs, and all the other stuff. There would always be kids walking on the sidewalks and crossing streets while texting. Most of the time, drivers would be looking down at their phone while driving and don't even notice a pedestrian crossing the street but is also looking down at their phones. Then, BOOM. Goodbye innocent people. There would be no survivors at all.
In those 20 years, was the war. It was horrible. We had to move to a different country because it was so bad. The war involved a lot of soldiers but also most of the great inventors in the world. Sadly, the soldiers came back but, no inventors survived. What has happened to this small city?