Northerners responded in many different ways to the Fugitive Slave Act, but the best option from the list would be "<span>A. Some northern states enacted legislation opposing it" was one of the major tensions leading up to the war. </span>
Yes, they were legitimate because there should be no taxation without representation. Many of the things they were being taxed on were used heavily succh as paper and tea.
The Ancient Mayans developed the science of astronomy, calendar systems, and hieroglyphic writing. They were also known for creating elaborate ceremonial architecture, such as pyramids, temples, palaces, and observatories.