The expansion of the rail networks led to a growth in the steel industry.
a growth in the textile industry.
a decline in the coal industry.
a decline in the meatpacking industry.

this isn't a question and if you're going to list things be kind and use commas.

no options provided, here,but the answer to this question is often: a historian cites a japanese newspaper article published a year after the end of world war ii in order to draw conclusions about the effect of the war on the japanese economy.

clearly from the answer, the historian alludes to historical sources,and records to aid in analyzing and drawing conclusion on the effect of the war on the economy of japan.