I particularly mean monotheisms, which are part of imperialist debate that rarely, if ever, get referenced. While Judaism occupies a territorial range subject to its own imperialist myths, Christianity and Islam occupy global regions that have no limits.
Christianity gained its global reach through its absorption into the Roman empire, a military construct that had no limits and which remains with us in the Papacy and all the Holy Roman polities of the past. Its conquests came alongside the imperialist adventures of European nations solidifying the achievements of swords and rifles. Islam, although there is no evidence of conversion alongside the earliest Arab conquests, seems to have practised conversion with or through conquest after Byzantine and Persian pushbacks against its rule a few decades later. Conversion and conquest then occurred together, the swords of early Arab armies pushing Islam through and into the Old World and Africa.
Both had or have missionaries that work more discretely to create cultural hegemony.