What are the differences between primary and secondary sources?

kennedy used a range of this to develop a 'flexible response' plan for any international crisis. “he also expanded the it was important, because it ordered the fall of khruschev.

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the most famous of all the units fighting in cuba, the "rough riders" was the name given to the first u.s. volunteer cavalry under the leadership of theodore roosevelt. roosevelt resigned his position as assistant secretary of the navy in may 1898 to join the volunteer cavalry. the original plan for this unit called for filling it with men from the indian territory, new mexico, arizona, and oklahoma. however, once roosevelt joined the group, it quickly became the place for a mix of troops ranging from ivy league athletes to glee-club singers to texas rangers and indians.

c. government control over the unsettled western lands