What effect did the railroads have on the development of cattle ranching on the great plains?

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How does the u. s. constitutional republic compare to authoritarian forms of government

What was the 1787 constitutional convention? !

Two gymnastics teams are intense rivals. the first team has started recruiting new gymnasts from different cities and even foreign countires in an effort to build a stronger team. after learning this, the secondteam begins its own recruitment campaign to find better gymnasts. over a period of months, each team recruits dozens of players, each time trying to find a better recruit than its rivals most recent addition. which idea from the cold war is most similar to this scenario