It was developed by the ancient Egyptians
There were 30 states at the beginning of 1850 and 31 at the end.
<span>At the start: </span>
<span>15 free states- Maine, Vermont, New Hampshire, Massachusetts, Rhode Island, Connecticut, New York, New Jersey, Pennsylvania, Ohio, Michigan, Indiana, Illinois, Iowa, and Wisconsin </span>
<span>15 slave states- Delaware Maryland, Virginia, North Carolina, South Carolina, Georgia, Florida, Kentucky, Tennessee, Mississippi, Missouri, Arkansas, Texas, Louisiana, and Alabama </span>
<span>Then, with the Compromise of 1850, California came into the Union as a free state.</span>
An example of a government power shared by the national and state governments is the power to "tax", since both the federal and state governments can tax citizens. These are referred to as "concurrent" powers.