How did Andrew Caregie contribute to the industrial development of the United States? O He supported labor unions and raised his workers' wages.
O He introduced pipelines instead of railroad cars to transport oil.
O He adopted new techniques to mass-produce steel at lower cost.
He financed the first transcontinental railroad, allowing rail travel coast to coast.

What happened to segregation laws after the case of plessy v. ferguson? segregation still existed, but only in very small towns with no access to court systems. important politicians like ferguson, once in favor of segregation, began to denounce it. plessy v. ferguson began the breakdown of segregation as it was defined at that time. segregation continued, and citizens experienced many more years of legal segregation.

Why was it difficult fpr unions to succeed in the 1800s

What are the contributions of the byzantine empire