The combined Union Pacific-Central Pacific line became known as the First Transcontinental Railroad and later the Overland Route. The line was constructed primarily by Irish labor who had learned their craft during the recent Civil War.
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Explanation: Nuclear bomb has highly enriched uranium going into critical mass and exploding with force in the order of megatons
an atomic bomb is made up of a fissile element like uranium, which is enriched in the isotope that can sustain a fission nuclear chain reaction.
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1800s
December 2,1804 to be exact
Slave ships were large cargo ships specially converted for the purpose of transporting slaves. ... As many as 20 million Africans were transported by ship. The transportation of slaves from Africa to America was known as the Middle Passage.
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