When World War II was over it came to light that the military had rejected over half of the men who were drafted or had given them lighter duties, because they were not fit enough for combat. The United States began to realize it needed to focus more on fitness. A researcher by the name of Thomas K. Cureton began to study exercise and fitness. He conducted many experiments and was able to establish a set of guidelines for maintaining fitness.
It was in world war 1 because it was one of the sessions where poland had to create a new nation
One major effect of the discovery of the New World in the late fifteenth century was a "<span>global exchange of plant life," since this was referred to as the "Columbian Exchange," and led to wide-spread cultural and organic diffusion. </span>
Dr. Jonas Salk is man who made the vaccine
