 Complete the following phrase:  Allied bombing of the oil campaign targets of World War II included attacks on Nazi Germany oil refineries, synthetic oil plants, storage depots, and other chemical works. Natural oil was available in Northwestern Germany at Nienhagen 55300,000 tons per year, Rietberg 20300,000, and Heide 300,000 and refineries were mainly at Hamburg and Hannover. Refineries in France, Holland, and Italy 54mainly coastal plants for ocean-shipped crudewere within Allied bombing range and generally unused by Germany Italian refining ceased in August 1943. Even before the war, Germany was dependent on foreign sources for an adequate supply of oil. The annexations of 