I 'd like to visit foreign countres !!

I have never been to go abroad, so I wold like to visit foreign countries like UK, France or China. These countries have their own histories. For instance, Britain was once called as "British empire" and held one-quarter of the world's population, and covered a quarter of Earth's total land area. That is unbelievable for us Japanese and very very interesting to me. How did UK expand their territory all over the world ? How was the relationship with Japan or Russia ? France has also their great history, and has many places to visit such as Louvre museum
or the Versailles Palace. And China has long history too.
I would like to visit such countries to enjoy and also want to rediscover the good points or bad points of Japan.