There is a very good example of shifting the demographic using...

There is a very good example of shifting the demographic using immigration and the womb. Christian Lebanon took in the arabs from Israel. Within a couple of generations, there is a religious civil war and Lebanon is now majority muslim. I guess that was the fall of the last christian nation in the levant. The outcome of that war was assured by Syria, their muslim neighbour, and Hamas, funded by Iran. It included a genocide of Christians in the south of Lebanon. They didn't have a chance, and nobody talks about it much anymore.