Immigration was the major aspect of the colonization. You can't have colonies without settlers.In your extensive research in historical documents, you must have missed the many time Britain and the Zionists spoke openly about their colonial project.
Immigration is not equivalent to colonizing. The Jewish people, in returning to their homeland were not colonizing -- they were returning, regardless of what particular language might have been used in newspaper articles from a hundred years ago.
And you cant have a colonisation project without a colonial power that the colonists are subservient to. Now what was that colonial power the Jews of the world were subservient to, that gave them their orders and funded the colonisation ?