When we say something "was necessitated," it means that it was required or needed. There are many synonyms that can be used to convey this idea, including "had to," "was essential," "required," "demanded," "called for," "obliged," "compelled," "forced," "mandated," and "needful." Each of these words conveys a slightly different shade of meaning, but they all imply that something was necessary or vital for a particular purpose. Whether you're writing a formal report or just trying to make your language more interesting and varied, these synonyms can help you to communicate more effectively and convey your ideas with greater precision.