Why Promise a Jewish Homeland in World War One?

The notion of a Jewish homeland was something very recent Believe it or not barely 10 15 years before World War one this notion is now becoming popular in Europe. 99% of the Jewish people around the world Shrugged their shoulders and didn't care. The question arises why what's going on why promise a Jewish homeland during World War One? What is the point behind this? That's what we're gonna talk about for the next few minutes.