Answer: A. a paradigm shift,as it challenged the existing paradigm of the day
Explanation:
A paradigm shift is a major change that occurs in the practices and the concepts of how something works.
Since Ptolemy believed that the earth was at the center of the universe while Copernicus asserted the notion that the sun was at the center of the solar system. Thomas Kuhn would call this an example of paradigm shift.
The answer is B)<span> They were successful due to a single leader or dynastic regime maintaining control of the government.
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All these government were authoritarian and except for North Korea, all have since collapsed.
The one common factor among, Iraq, Libya and North Korea was that all of these were ruled by one family who were able to maintain strict control over the local population.
Even during economic upheavals, the strong one-party/family control ensured that the country endured.
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This is probably because scientific journals get cross-referenced and peer-reviewed by other mainstream scientific organizations whereas a regular webpage can tell you just about anything without anything to back it up. Their credibility isn't as high.
People won’t know how to express there feelings on something like homework for example because they’ve been at home for a year and have been talking to a computer this whole time. They haven’t had any human interactions, especially the little kids who are in elementary and just started school.
Hope this helps!
The answer is physical symptoms <span />