Why did the British Empire want to spread Christianity?

Answer 1

Settlers brought with them their Christian faith as they traveled to new lands. They taught their religious beliefs to the native people (often forcing it on them ) therefore new territories or "colonies" that were sprouting up across the world were built on the Christian faith. Hence more of the world began practicing Chritianity.

Answer 2

The British Empire was mostly by colonisation, but with some element of conquest being included in that colonisation. This colonisation of almost half the world was not primarily driven by the desire to take Christianity to the nations, but rather the motives were political, and often involved rivalry with other European powers.

At that time, everyone in Britain would have called themselves a Christian. Therefore, the new settlers would naturally have taken Christianity with them to new colonies.

In addition, there were many Christians in Britain and in the colonies who believed they were called to take the message of Jesus Christ to people who had not heard the message before. It is these people who were primarily responsible for the spread of Christianity to these other countries, not the British Empire as such.