Checks and balances or the three government branches in the US
John Quincy Adams, hope this helps
The Federalist Papers were written to convince Americans to approve the U.S. Constitution.
An astrolabe<span> is an elaborate </span>inclinometer<span>, historically used by </span>astronomers<span> and </span>navigators<span>, to measure the </span>inclined position<span> in the sky of a </span>celestial body<span>, day or night. It can thus be used to identify stars or planets, to determine local latitude given local time and vice versa, to survey, or to </span>triangulate<span>.</span>