The ancient Roman and Greek civilizations had well-organized political processes that greatly influenced the manner in which later governments were structured in Europe and the United States. The system of political parties, the establishment of divisions in government -- even political words such as democracy, monarchy and tyranny -- originated in ancient Rome and Greece. Although Rome drew many of its political principles from the Greeks, and as a result, developed a government similar to that of Greece, there were several differences between the two.
Perception is the ability to see, hear, or become aware of something through the senses.

<h2>Limits on Congress</h2>
pass ex post facto laws, which outlaw acts after they have already been committed. pass bills of attainder, which punish individuals outside of the court system. suspend the writ of habeas corpus, a court order requiring the federal government to charge individuals arrested for crimes.
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To further encourage western settlement, Congress passed the Morrill Land-Grant Act of 1862. It gave state governments millions of acres of western lands, which the states could then sell to raise money for the creation of "land grant" colleges specializing in agriculture and mechanical arts.
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President Harry Truman orders the Enola Gay to drop the atom bomb on Hiroshima.