Question

Which country had the third largest population in the world during the age of revolution?
A) India
B) Russia
C) China
D) Japan

Answer 1

Hint: From the late $18^{th}$ to the mid - $19^{th}$ centuries several remarkable revolutionary movements took place during the Age of Revolution in most of Europe and America. Under the Age of revolution the revolutionaries' democratic demands were combined with liberation and national unification movements, in Italy, Germany, Poland, Hungary, etc.

Complete answer:
The period of the Age of Revolution is famous for the altar from absolutist monarchies to democratic or representative governments with a written structure, and the creation of nation states. The American Revolution, inspired by the Enlightenment's revolutionary ideas, is generally considered the starting point of the Age of Revolution. Urban overcrowding and working conditions for urban factory workers have also resulted from Russia's rapid industrialization.
The Russian Revolution, starting with the abolition of the monarchy in 1917, was a time of political and social revolution throughout the Russian Empire's territory. The Russian empire had a mostly agricultural economy, with low productivity on vast estates worked by Russian peasants, known as serfs, who in a feudal arrangement were related to the land. In 1861, the servants were released, but the aristocratic landowning class maintained influence. With the assistance of foreign investment in railways and factories, the economy has steadily industrialised. The land was governed by a noble class, the boyars, and subsequently by an emperor from the $10^{th}$ through the $17^{th}$ centuries. The Russian Empire existed on the theological ideology of Orthodoxy, Autocracy, and Nationality as an absolute monarchy until the 1905 Revolution, when a semi-constitutional monarchy was created. In the mid-19th century, in much of Europe and the Americas, many major revolutionary revolutions took place. The Russian Empire had the world's third-largest population during this period and Finland and Poland were also included.
Option A, C and D can be easily eliminated.
Hence, the correct answer is, ‘B) Russia’.

Note: Along with the economic and mechanical changes Europe witnessed various political changes in this era as the social divide was evident among the masses hence the people united for their democratic demands and asked for Independence.