How can we better understand the details of the umbrella terms, “hispanic” or “latino”?

The history of both. After the Spanish revolution left all nations mixed up and confused, intellectuals at the time had trouble defining the "Spanish Identity". So instead, the umbrella term "Hispanic" was created to refer to all of the persons living in South America.

The number of a state's electoral votes could change if the     state population has a major change compared to other states due to national regisdtration of popualtion done in every 10 years