In what ways were challenges of the past similar to those of today?

Why did president lincoln place general mclellan under the command of general halleck? a. mcclellan failed to capture richmond. b. mcclellan was responsible for the north's defeat at the second battle of bull run. c. mcclellan failed to defeat lee at antietam creek.

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

Who's idea was it for businessmen to use their wealth for the greater good of society? (gospel of wealth ~ap u. s. history