Here are some inventions and innovations that changed american life during the first half of the nineteenth century. choose one, name the inventor/innovator most closely associated with it, explain what it was, and describe the difference it made.
-mechanical reaper
-steel plow
-cotton gin
-power loom
-factory production

The correct answer is the following.

We are going to pick the Cotton Gin,

The Cotton Gin was invented by Eli Whitney (1765-1825) in 1794. This new machine changed and modernized the production of cotton because it sped up the process of removing cotton seeds from cotton fiber. This allowed plantation owners in the South to export cotton to Europe.

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.