A: Law enforcement officers are required to uphold the law.
Explanation: Those under law enforcement are given a requirement to uphold the law as their actions are always taken into account in court. For example, an officer is required to read out the rights to an apprehended suspect out of necessity since the Miranda v. Arizona case of 1966 being a staple of how law enforcement officer's actions can be seen as unconstitutional and lose court cases due to it. Law enforcement officers also uphold the law so order within society can be maintained.
Donald trump is predident # 45
He is considered one of the greatest generals of modern times and one of Italy's "fathers of the fatherland", along with Camillo Benso, Count of Cavour, Victor Emmanuel II of Italy and Giuseppe Mazzini.
It would be between increased population, a steady stream of agricultural production, and technological advancements. As for the most important one of those three; that would be agricultural production.