Executive Branch<span>: Headed by the president.</span>
Earth's Tilt Is the Reason for the Seasons..The seasons are caused as the Earth, tilted on its axis, travels in a loop around the Sun each year. Summer happens in the hemisphere tilted towards the Sun, and winter happens in the hemisphere tilted away from the Sun.
US president Thomas Jefferson recognized that the revolution had the potential to cause an upheaval against slavery in the US not only by slaves, but by white abolitionists as well. Southern slaveholders feared the revolt might spread from the island of Hispaniola to their own plantations.
