How and why did the labor issues started in 1920s?

Some believed labor leaders sought nothing less than to overthrow the American capitalist system.

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.

the answer is "focused on"

lol gave an answer 1 week that's the answer for those who need it in the future xd