1.) its about "generational change" years we are able to enhance out studies and engange to more advance learning in discoveries
2.) socio-economic and environmental influences probabbly could affect (there are more and further explanation bout this)
3.) basically "past ideas" are the our main root of the principles and manners today so these ideas are not exactly different it is just innovated and enhanced
After the end of World War II it was the time of decline of European colonies which lead to the rise of new superpowers and emergence of several new countries on the map.
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After WWII Europe was divided into USA captured Europe and USSR capture Europe. The end of the war increased the rate of decolonization. Independence being granted from great powers like India from United Kingdom, Indonesia from Netherland. The Philippines from The United States and several Arab nations get free from the superpowers.
This happened because the superpowers were badly affected by the war and they were not able to rule other nations anymore so they have to step back. Thus how the World War II led to the origin of independence and even the formation of so many new countries and nations.
It was the period of catholic resurgence initiated in the response to the Protestant Reformation
His policy of 'perestroyka' led to more openness and ultimately the collapse of the USSR. He was the first soviet leader not personally trained by Stalin.He had to deal with the consequences of the worst nuclear disaster ever (Chernobyl),which could not simply be covered over politically or by secrecy.He admitted the soviet economy had supply and demand problems that needed significant repair.He admitted soviet industry had extreme inefficiency.He requested more honest and open press coverage.he increased the price of a loaf of bread.
The correct answer is C) A biography of a presidential candidate written by the candidate's main opponent.
The source that is the most likely to contain a problematic bias is "A biography of a presidential candidate written by the candidate's main opponent."
The rival candidate could find hard to maintain objectivity when writing the biography because he was his political rival and it is probable that he could have some resentments and differences that could bias the information of the book. It would be hard for him to write objectively and readers should read the information carefully, knowing that what is expressed in the biography could be biased and needed other sources to confirm its validity.