When the American Indians were forced to move to Oklahoma.
Explanation:
Andrew Jackson hated Indians, so during his presidency, he made Indians move out of their homelands. The Trail of Tears was when all the Indians had to walk from their homeland to Indian Territory, or Oklahoma.
<span>Brigham Young led the mormons into the Utah valleys salt lake </span>
Maarten Schmidt found the spectral lines were high redshift (had their emission lines shifted toward longer, redder wavelengths by the expansion of the Universe)
<span>The puzzle about quasar spectra, which was finally solved by Maarten Schmidt, was </span><span>the brightest known quasar</span>.
