I had this question on my social studies too. The Northwest Passage, I can't tell you what it is but I can tell you some explorers. Those are Giovanni da Verrazano, Jacques Cartier, and Henry Hudson.
The Mexican-American War was a conflict between the United States and Mexico, fought from April 1846 to February 1848. ... It stemmed from the annexation of the Republic of Texas by the U.S. in 1845 and from a dispute over whether Texas ended at the Nueces River (the Mexican claim) or the Rio Grande (the U.S. claim).
Answer:
John Calhoun reacted to the tariff in an aggressive manner. He later pinned down South Carolina Exposition and Protest in order to nullify the tariff.
Explanation:
The tariff which the vice president John Calhoun sought to nullify stated that the tax would be used to increased the living standard of the south. In order to stop the exploitation, he penned down the doctrine of nullification.
Even though South Carolina was the only state who invoked the nullification, later on South Carolina was forced to compromise on the treaty.
The Burj Khalifa
The world's current tallest building, the Burj Khalifa in Dubai, soars 2,716 into the sky,