I believe the answer is A, Pollution of the environment, hope this helps :)
The 14th Amendment overturned the Dred Scott decision. This amendment gave citizenship to more than 4 million previously enslaved African Americans. The 14th Amendment was part of the Reconstruction Amendments, which included the 13th (abolished slavery) and the 15th (gave African American men the right to vote). These amendments were passed between 1865-1870.
Answer:
British raj, period of direct British rule over the Indian subcontinent from 1858 until the independence of India and Pakistan in 1947.
Explanation:
<span>California, Utah, Nevada, Arizona and New Mexico
those are the states that united states gained after the mexican-american war. but from your options it would be letter A</span>