HELP ASAP WILL GIVE BRAINLIEST Why can the period from 1877 to 2010 be called the "Long American Century"?

When analyzing the american landscape at the time, it can be clear that some women did not support the suffrage movement due to the fact that it would impact their current way of life, leading to fewer protections and safeguarding under the us law, and in their family lives.

Divide each number then subtract