Cases produce substantial changes both in the understanding of the requirements of due process and in the practical day to day operations of the justice system.

Landmark case

Explanation:

Landmark case is a court case that is studied because it has historical and legal significance. The most significant cases are those that have had a lasting effect on the application of a certain law. Landmark cases produce substantial changes both in the understanding of the requirements of due process and in the practical day to day operations of the justice system. Landmark cases are useful understanding how the judicial branch works, to see how past judicial decisions have affected the law

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place

answer; i believe that the correct answer is (d); // supercontinent