FDR - he created the social security program, the New Deal, and many other social programs that we still have today
It would be on how to handle and manage the world after the Second World War. After the war the allied powers were divided on how the world would look after and it resulted into conflicts and struggles and even resulted a Cold War between the two world's superpower which is the US and the USSR.
The project D. Building the Transcontinental I believe is the one that led to the creation of a system of time zones across America
<span>c. production of goods
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Without the movement of goods, people, and ideas, cities falter, economies wane, and societies wither. As local economies and their associated land uses have become more specialized, mobility has grown ever more central to the sustainability of human activity. Economic specialization, which has fueled productivity growth and propelled the dispersion of interlinked activities worldwide, is premised upon various forms of mobility, including the migration of labor from low-wage to high-wage places, the daily travel of workers from their homes to workplaces, the movement of materials to worksites, and the distribution of finished products to markets. When mobility ceases, as in the case of a natural disaster, not only do workplaces fall idle, but also people cannot get emergency medical attention, families cannot obtain food, and social gatherings of all sorts are canceled or postponed.