Answer:
The reason why many historians regard the printing press as the most important invention of the past millennium is because it allowed for thoughts and ideas--and thus things like revolutions and large-scale changes--to spread far more quickly and effectively.
Explanation:
In 1813, Santa Anna fought in the battle of Medina
<span>The assassination of the Archduke Ferdinand of Austro-Hungary and his wife in Sarayevo on June 1914</span>
The mid-1960's popular music innovation that was ushered in by the beatles was VariSpeed- altering of kHz cycles through voltage changes to slow down and increase tape speed.
<h3>What was VariSpeed?</h3>
The Beatles were a very popular bands for many reasons and one of them was their innovations to the style of Psychedelic rock and Blues that they played. This made their music stand out so much so that they became arguably the influential band to ever exist.
One invention they came up with was called VariSpeed which meant speeding up or slowing down a musical record to produce a desired effect. It was done by using voltage changes to alter of kHz cycles.
Find out more on The Beatles at brainly.com/question/4687506.
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The answer is "A" : Segregation and Low Wages