No. It wasn't.

For anyone whose ancestry traces back to what is now the British Isles, Europe, Scandinavia, and Russia: People lived in those regions long before Christianity came to them. They had a remarkably well-organized civilization (see Brehon Law in Ireland, for one) and were not ignorant savages living in degeneracy.

They would not have survived those climates for long if they were. They had to work together, look out for their own, and understand the world around them (natural science) if they were going to make it through, and they did.

The beautiful objects they made survive today in museums. Their customs and traditions became part of Western civilization, and one of those customs was taking care of everyone at the middle of winter - the Winter Solstice.

That is where our customs of gift-giving and going home at Christmas come from. Be proud of your brave and generous long-ago ancestors who created such ways of living.

This explains why, for the most part, Christianity did not have to be forced on these people. It made sense to them and it was easily combined with their other traditions, like the one about gift-giving on the Solstice. So that's what they did. As we still do today.

"Santa Claus" traces back to the kings and chiefs of these tribes making sure everyone had enough food, clothes, and warmth at midwinter to get through until spring. The carol about "Good King Wenceslas" is about exactly this.

So, no. It wasn't.