The end of the feudal systems that defined the European Middle Ages was
primarily caused by "<span>(C) the emergence of trade and a middle class of merchants," since this created more opportunities for people to "break free" from the land-holding system. </span>
<span>Technological advancement.
With the likes of social media platforms like tweeter and facebook and specialist tech websites like techcrunch. The news of a new product will always spread virally especially if the product serves a niche purpose and it's relevant to solve a particular need that the market have been wanting for a long time. So, with improved technology that we have today, the news of new technology spreads easily.</span>
Affordable goods, electrical power, advertising, and credit
One such event would be the famous March on Washington, which took place in 1963 and included a speech by Martin Luther King Jr. It showed that African Americans were taking matters into their own hands when it came to obtaining jobs and freedom.