What laws prevented equality between states of the North and South, as discussed in Chapter One?

The Constitution itself was written in such a way that it gave certain rights to slave states that did not exist in other states. This includes the Fugitive Slave Laws. As the United States began to grow, slavery grew as well, and more slave territories were admitted into the Union. However, with the abolition of slavery in the North, a line was drawn between the slave and free states.