How did the cotton gin change agriculture in the south?
a. it combined cotton and wheat farms.
b. it encouraged textile factory construction.
c. it simplified the planting process.
d. it made cotton the dominant crop.

D. It made cotton the dominant crop.

Explanation:

In the southern United States, cotton began to be used as a commercial crop in the states of South Carolina and Georgia using the first roller ginners. In 1792, Eli Whitney invented the cotton gin, which mechanically separated the seeds from the cotton fibers, triggered a real revolution in the cotton processing industry and contributed to transform cotton into a dominant crop and the United States into the world's largest producer of cotton.

a. there was serious competition for tech jobs at the downtown clinic.

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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.