Jacob riis was most known for his late 19th century work in exposing the horrid living

Jacob Riis was most known for exposing the terrible living conditions in the tenements of New York in late 19th to early 20th century.

I do apologize, not sure what you were asking. But that is what Jacob Riis is known for :)

Jacob Riis (1849-1914) was an American social reformer and mud slinger columnist. He uncovered the loathsome and dreadful living conditions that the underclass lived in to the center and high society. He archived huge numbers of the ghettos and ghettos of New York amid the late nineteenth century and would pioneer photograph reporting. He likewise created glimmer photography which would make this field and in this way the data substantially more available to the general population. Would likewise present model apartments, an early thought like that of the "activities", or network lodging.

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explanation:

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