Question

why was russia struggling to modernize at the end of the nineteenth century?
revolutionaries were trying to overthrow the tsar.
european nations refused to finance russias industrialization.
russias leaders and nobility had resisted social change.
russia refused to abolish serfdom and its agricultural past.
question 15
who revolted in november 1917 in petrograd and took power from the provisional government?
bolsheviks, led by lenin and trotsky
mensheviks, led by stalin and petrosky
the whites, led by former generals loyal to the tsar
the moscow soviet, led by rasputin

Explanation:

For the first question: Russia's leaders and nobility resisted social change, which hindered modernization. Serfdom was abolished in 1861. Revolutionaries' actions were more of a later consequence. European nations did invest in Russia's industrialization.
For the second question: In November 1917, the Bolsheviks, led by Lenin and Trotsky, revolted in Petrograd (now St. Petersburg) and took power from the Provisional Government. The Mensheviks had different views and were not the ones to take power then. The Whites were opponents in the civil war later. Rasputin was assassinated in 1916 and had no role in this revolt.

Answer:

For the first question: Russia's leaders and nobility had resisted social change.
For the second question: Bolsheviks, led by Lenin and Trotsky.