Answer:
In any case, the Byzantine Empire managed to survive after the decline of the Western Roman Empire due to a number of advantageous circumstances. ... Combined with a lack of mass Germanic migration into their territories, the Eastern Roman Empire was thus in a much better position to survive the collapse of the Empire.
Explanation:
I believe its the oil crisis of 1973.
This is usually the result of an underdeveloped infrastructure or lack of technological achievements. The communication revolution requires countries to have highly advanced infrastructure that can support making a huge communications web and many countries have historically been destroyed by wars or have generally been poor and couldn't develop in that field, which means that nowadays they can't enter it quickly.
Our bodies produce antibodies to defend against pathogens to it cant be A.Antibiotics are a drug given to people that are sick to it cant be C so it has to be B
