When this plea failed Russia began to
or prepare its military forces for war.

While your opinion may play a role in your choice, your rankings should reflect sound reasoning. So, you should base your rankings on specific qualities such as the short- and long-term impact that each development had on other civilizations at the time or the degree of technological advancement and creativity that it demonstrates.

Be prepared to defend your choices and rankings. Again, your aim is to present supportable rankings. Discuss and question the rankings of your peers as well.

Explanation:

your opinion is more important than other peoples