Succesful because the 16th amendment is an important amendment that allows the federal (United States).
The French and Indian War began in 1754 and ended with the Treaty of Paris in 1763. The war provided Great Britain enormous territorial gains in North America, but disputes over subsequent frontier policy and paying the war's expenses led to colonial discontent, and ultimately to the American Revolution.
Earth has seasons primarily due to its tilt of roughly 23 degrees, since this allows for sunlight to hit the Earth in different ways as the Earth rotates around the Sun. The distance of this rotation remains fairly constant.