What significance did the Railroad industry and Vanderbilt play in expanding the United States?

What was different about warfare in the early 1800s and early 1900s?

Which struggle to place between colonist and soldiers in boston on march 5, 1770

Which of the following is true of emotions? (a) a neurologically-intact baby can show at least six distinct emotions at birth. (b) the character of emotions changes as we develop cognitively. (c) basic emotions are culturally- and developmentally-based. (d) in general, adults cannot interpret infant emotions until the infants are 10 to 12 months old.