He was the first president to visit China.
The Earth takes 365 ¼ days to revolve around the Sun. This is known as one Earth year. Each planet takes a different amount of time to rotate around the Sun. 2.
Answer:
NASA research mathematician Katherine Johnson at her desk at Langley Research Center
Explanation:
Westward Expansion<span> and the American </span>Civil War<span>. To many nineteenth century Americans, the </span>expansion<span> of slavery into Western territories caused a great deal of controversy. ... These fears were realized when the </span>expansion<span> of slavery into western territories entered Congressional debates.</span>
<span>In the winter of 1814-1815 New England Federalists gathered in Hartford, CT to hold the Hartford Convention. This was a meeting for those who opposed Madison's War, better known as the War of 1812, and wanted to enact change in Washington for the many wrongs and complaints they had. Most of these came out of fears of being overpowered by southern and western states. This was a prime example of growing sectionalism as the end of the Federalist Party neared.</span>