Why was the United States referred to as the
Arsenal of Democracy?

The United States was called the Arsenal of Democracy because it was the country where all weapons were kept. it provided supplies for both the Axis and Allied powers. it provided supplies for the entire Allied war effort. it was the country where all aircraft were housed.

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)