What causes the northern and southern halves of the planet to experience winter and summer at opposite times?

At the beginning of wwii, what action by winston churchill influenced hitler’s strategy?

How does the concept of competition relate to the arms race between the us and the soviet union during the cold war?

Is karma the same as destiny, in the sense that everything that happens to you is predetermined? do you believe that "what goes around comes around," and if so is this the same as karma? does everyone get what they deserve, in the end?