Answer: True
Explanation: mostly from Asia and Africa
All of those choices are correct
A worker discovered it by accident.
There was a man named James W. Marshall who found gold on January 24, 1848, He saw something shiny in the stream. He had discovered gold unexpectedly while overseeing construction of a sawmill on the American River.
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Federal laws can override state laws.
the supreme court ruled that the new york law allowing steamboat operators to have exclusive rights to operate in their state because it conflicted with an existing federal law, violating the supremacy clause.