It means that it cannot be changed and that it is our rights. laws can be changed but the constitution cannot
1. La calzada romana
uso:destacaban la movilización de grandes ejércitos con una rapidez nunca vista
Hormigón
uso:permitió que los edificios construidos no estuvieran solamente hechos de piedras apiladas y mortero.
Answer:
A landmark case is a court case studied because it includes historical and legal significance :)
Explanation:
Most famously he improved the telescope. He studied astronomy with his telescope.