The expansion of the railroad directly led to economic growth in the us because a.) railroads increased competition between different industries. b.) railroads allowed company owners to travel all over the country. c.) railroads made resources and products easier to transport. d.) railroads led to increased prices of newly available products and resources.

'wind, frigid air hinder firefighting efforts of massive new jersey paper plant fire '

the dust bowl, otherwise known as the dirty thirties, was a huge dust storm that killed multiple (and i mean  multiple) farmer's crops, leaving them homeless, and foodless, and jobless. in california, there were 5.7 million residents, and the population shrank as mexicans were repatriated. however, when the dustbowl happened, a lot of people began to move to california. by 1940, 250,000 people had arrived. therefore, your answer would be  the population increased, massively.  i hope this !

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