How many cars were on the road in 1930?

In terms of statistics, 7.5 million automobiles were registered in the U.S. in 1919; by 1929, that number had grown to 26 million, 23 million of them passenger cars.

Explanation:

a.) d-day invasion of normandy.

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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)