How did western expansion become inextricably linked with sectional identity during the 1840s?

Why was russia drawn into a conflict with germany after ausria-hungary declared war on serbia ?

Ow does the point of view used in "battling the digital jolly roger" differ from "the completely free market" and affect the reliability of the article?

Which of these innovations led to increased production in american factories in the early 1800s? a. the use of interchangeable parts b. the construction of canals c. the invention of the mechanical reaper d. the availability of electricity