Keegan stated that the European Civilization was "pregnant with war" going into the twentieth century. With Europe's industrial revolution in the nineteenth century creating a massive influx of wealth, energy, and population, the world was changing into a new era. With the industry growing, communication expanding, agriculture exploding, and infrastructure rising, the armies grew to their largest and most destructive state. Keegan later states that, "The enormous enlargement of European economies was meanwhile creating the tax base by which the new armies of conscripted recruits were supported" (Keegan, John. The Second World War. New York: Penguin, 1989), meaning that the world was transforming into a state where the economy of many countries were able to support more powerful armies. With nations now being able to build up stronger armies, the fight for power became a lot more lethal. With the mass surplus created by the industrial revolution, mass armies were more easily able to be transported and supplied around the battlefield. Overall, with the products of the industrial revolution strengthening economies around the world, the European Civilization was being thrust into a world "pregnant with war" due to the hostilities that were rising and the armies that were growing in size and power.
