45.
Choose the correct answer.
During the Industrial Revolution in the United States, slavery became increasingly important to the production of _________.
cotton
coal
tin
oil
46.
Choose the correct answer.
During the ______, settlements were made between the Great Powers for the purpose of reestablishing the "old order."
Concert of Europe
Congress of Vienna
Ottoman Congress
Congress of Europe
47.
Choose the correct answer.
The __________ faction of the Communist Party believed that Russia could only be transformed into a totally socialistic state by violent revolution.
Red Army
Duma
Blackshirt
Bolshevik
48.
Choose the correct answer.
Albert Einstein's Theory of Relativity changed the popular understanding of _________.
the atom
art
reality
society