January 24, 1848 was when gold was found by James W. Marshall at Sutter's Mill
Answer:
These atoms will decay as the rock ages, and by measuring the ratio of radioactive isotopes within the rock, scientists can figure out how long it has been around. In 1913, geologist Arthur Holmes published “the Age of the Earth,” the first major effort to date the planet using radiometric dating.
The passage of the Chinese Exclusion Act<span> came after a long period of anti-</span>Chinese <span>discrimination. ... The </span>Chinese Exclusion Act<span> of 1882 was one of the first pieces of legislation passed by the United </span>States<span> government to legally discriminate against the </span>Chinese<span> people.</span>
