If general relativity offers the best description of what happens in the presence of gravity, why do physicists still make use of newton’s equations in describing gravitational forces on earth (when building a bridge, for example)?

Newton's equations are more straightforward and better used on the surface of Earth and also there is only a small difference between the two.

both the fifth and fourteenth amendments of the united states contain a due process clause. while the fifth amendment describes a legal obligation of the federal government to not deprived of life, liberty or property without due process of law, the fourteenth amendment applies the same obligation to the states to guarantee that all of the states provide fair procedures as well.