The Grand Period of Hotels in America dates from
1825-1875
1850—1900
1750–1800
1900–1950

he graph shows air pollution in the city of London over time.

A graph titled Air Pollution in London has year on the x-axis and particles (micrograms per cubic meter) on the y-axis. At 1700 the value is around 260; 1750, 360; 1800, 390; 1850, 580; 1875, 610; 1915, 380; 1950, 150; 2016, 20.

When did air pollution reach its highest point in London?

around 1825

around 1850

around 1875

around 1900

Explanation:

when studying cause and effect, historians usually group the causes into different categories. for example, cultural causes reflect how a society’s literature and art convey the way the society saw itself in relation to the rest of the world. another resource that historians use to understand society is pop culture, which tells them the trends and ideas that are preferred by the common people. when studying cause and effect, it’s important to remember multiple causation, or the idea that an effect could have several causes and vice versa.  

the correct option is “cultural causes” since art and literature are related to the culture of a place. culture is determined by literature, art, music.

the correct option is “pop culture” since it reflects the likes and ideas of common people whereas the rest of the options do not focus on common people.  

the correct option is “multiple causation” since it refers to the idea that events are caused by multiple reasons, not just a single one.