In 1860 how many southern states seceded from union?

The most serious attempt at secession was advanced in the years 1860 and 1861 as eleven southern states each declared secession from the United States, and joined together to form the Confederate States of America.

well the fact it is basically a peninsula allowed trade to come from many places, thus allowing cultural diffusion to take place. india has seasonal monsoons that merchants travel back and forth from india using the monsoons wind patterns

the answer is a. laws were enacted in the aftermath of the plot to make it harder to free slaves,increasing sectionalism