“More material progress has been made during the past one hundred and fifty years under the American system of business enterprise than during all the preceding centuries in world history. This record of achievement is a challenge to those who would radically change that system.” WorldYearsHas BeensMadeAmericaPastChallengesRecordsProgressCenturyMaterialsAchievementHundredFiftyEnterpriseWorld History Author:Karl Taylor Compton
