This is homework help, not ‘write my essay for me.’ Do it yourself.
The primary distinction between modern communism and socialism is that socialism allows for some private ownership of property and businesses. The communism on the other hand has the government holds all properties.
The answer to your question would be choice D.
To complete the sentence above:
Napoleon’s failed invasion of Russia led other European states to attack the weakened french army.
The consequence of the military battles Napoleon drove in Italy is his triumphs gave France control of northern Italy and he came back to France as a legend.
The correct answer is: "railroads".
Railroads flourished during the 19th century and enabled to travel long in-land distances much quicker than before. They were also one of the main factors that triggered the industrial revolution, as quick transportation reduced production costs and brought important efficiency gains for industries, for instance, in coal mining, and contributed to the development of mass production systems.