Why is it winter in Australia when it is summer in the United States?

The main reason is that the USA is in the Northern Hemisphere & Australia is in the Southern Hemisphere. It has all to do with the tilt of the earth as it revolves around the Sun. Summer happens in the hemisphere tilted towards the Sun, and winter happens in the hemisphere tilted away from the Sun.

Because they both lie in different hemispheres.When there is winter there in Australia it is summer here because due to hemispheric climate in different places and also due to being far from sun

The war began as a fight between mayans and the landowners of the country. the main causes of the guatemalan civil war was started by the greed of the united fruit company, the fear of communism, and the racism toward the  mayan  people.

Intrusion is the best answer and the newest form.