Imagine that a country is fighting a war abroad: they need to have supplies sent to them. Those supplies need to be produced somewhere, and they're usually produced by the people back home, who also contribute to the war effort, but are not directly fighting. Those people are on the home front: at home but fighting.
For Canada, the home front would be in Canada.
Christianity is not a western religion. It originated on the Western fringe of Asia – what we tend to call the ‘Middle East’. However, for many centuries the expansion of Christianity was directed from Europe and became entangled with the growth of the great European empires. Today over two-thirds of the world’s Christians live outside Europe, which has reverted to what it was in the days of the early Church – unbelieving territory on the margins of the faith. The texts that you can look at here tell part of the story of how European Christians spread their message. They reveal some of their assumptions that we might now find strange or unacceptable. They also point to some of the reasons why Christianity would eventually take deep roots in other cultures – not least through the translation of the Bible into many different languages.
The first human ancestors appeared between five million and seven million years ago, probably when some apelike creatures in Africa began to walk habitually on two legs. They were flaking crude stone tools by 2.5 million years ago. Then some of them spread from Africa into Asia and Europe aftertwo million years ago. hope this helps