The correct answer is A) new technologies, new methodologies, full labor force, government direction.
The key factors that created a strong wartime economy were new technologies, new methodologies, full labor force, government direction.
During wartime, the government had to make difficult but strategic decisions in order to support the war effort, maintain social peace in the country, face possible contingencies, and activate the economy for war production such as ammunition, weapons, uniforms, and war machines. The key factors that created a strong wartime economy were new technologies that helped developed new combat vehicles, weaponry and telecommunication systems. There were new methodologies used in planning and war strategy. Meanwhile, in the country, the full labor force worked day and night in producing the goods necessary to supply the war front. And of course, all of these under the leadership and government direction.