Which of the following was involved in the most court cases

He u.s. constitution (1787) establishes a national legislature with powers to “create national law”, a national executive with the power to “enforce national law”, and a national judiciary branch with the power to “interpret national and state policies” to see whether or not they violate the national constitution. this term describes the division of governmental authority into semi-independent bodies?

The area directly outside a city is called 1 rural 2 urban 3 suburban

(05.04 mc) how did the roman transportation system keep the empire strong? plz