Copy and paste one statement from the description that explains why Chicago grew so quickly.

Chicago's manufacturing and retail sectors, fostered by the expansion of railroads throughout the upper Midwest and East, grew rapidly and came to dominate the Midwest and greatly influence the nation's economy. The Chicago Union Stock Yards dominated the packing trade.Chicago was incorporated as a town in 1833 and as a city in 1837, when its population reached 4,000. In 1848 Chicago got its first telegraph and railroad. By 1854 the city was the world's largest grain port and had more than 30,000 residents, many of them European immigrants.

Explanation:

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for starters, there is the structural trend of rising primary government expenditure as a share of gdp, which reached 36% in 2014, up from 22% in 1991. this increase reflected a political desire to address the poverty and inequality that had gone unaddressed during previous decades. to support the increase, brazil’s government increased taxes on consumption and promoted progress toward labor-market formalization. nonetheless, public investment, particularly in infrastructure, took a hit. in fact, with the exception of the 2005-2008 period, total investment as a share of gdp has remained below 20% since 1991.

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