Who did World War 1 and World War 2 effect?

Answer 1

WW1 and WW2 is a course in history that redistribute the power of the world and motivated countries to compete in technology

Primarily they affect (I'm afraid you used a wrong word for the qn) the whole world

To be more precise, it result in the fall of ottoman empire, the fall of british colonism rule, the rise of USA as the world super power, contributed much in resulting cold war and ultimately in many deaths and damage. Though the advance in technology is shocking as we went from big bulky tanks and first use of aircraft in WW1 to the first assault rifle, the first jet plane, the first atomic bomb and the end of using horses primarily in warfare