The sun's ultraviolet (UV) radiation is both the major cause of skin cancer and the best source of vitamin D. In Australia, we need to balance the risk of skin cancer from too much sun exposure with maintaining adequate vitamin D levels. Sensible sun protection does not put people at risk of vitamin D deficiency.
1 In 1819, Maine applied for statehood. Then a compromise developed: Maine could join as a free state to balance out Missouri joining as a slave state.  By 1820, the compromise had been realized. First, Missouri and Maine would be admitted to the Union, one as slave and one as free. In addition, the remaining territories would be divided into free and slave at the 36Â°30' parallel. This compromise became viewed as sacred by both sides.
Henry Clay, a leading congressman, played a crucial role in brokering a two-part solution known as the Missouri Compromise. First, Missouri would be admitted to the union as a slave state, but would be balanced by the admission of Maine, a free state, that had long wanted to be separated from Massachusetts.Second, slavery was to be excluded from all new states in the Louisiana Purchase north of the southern boundary of Missouri.n an attempt to keep a legislative balance between the pro-and anti-slavery factions, the Missouri Compromise delineated which states would be free and which would not. African Americans obviously opposed slavery and news of some congressional opposition to its expansion circulated widely within slave communities.