in approximately a 450-year time frame, on average at least two great powers were fighting one another in each and every year." hint: switch x and y and then use the previous problem. many people ask me what my favorite dish to cook is or what cuisine is my favorite. we are unique individuals working as one. these are the people who keep the channel alive. three years later, after several rounds with an editor, and a crash course in social media, i finally released it. these colors are much easier to see than black or blue. 