All of the colonies except Cuba and Puerto Rico attained independence by the 1820's.
I think it's political reasons because at the time they had many of political reasons. Also, the American Civil War was acctually about politics. People were thinking about political things that could be changed.
That's all I got. Hope this helps.
The first African country to achieve independence was <span>Ethiopia
</span>
The development that occurred in 1913 that best explains the dramatic decrease in the amount of time required to produce a single automobile was the widespread use of the assembly line.
<h3>What is an
assembly line?</h3>
This means the manufacturing process in which individual parts of a larger product are put together in a specific order. In current century, the process are performed by computers or robots.
In the 1900s, the assembly line sped up the manufacturing process dramatically especially in Henry Ford T industry.
Hence, the development that occurred in 1913 that best explains the dramatic decrease in the amount of time required to produce a single automobile was the widespread use of the assembly line.
Therefore, the Option A is correct.
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