The phrase "was effect" can be replaced with a multitude of synonyms, including "had an impact," "produced a result," "created a change," "yielded a response," "brought about an outcome," "caused a consequence," and "sparked a reaction." Each of these synonyms conveys a similar meaning to "was effect," but with slightly different connotations. For example, "spark a reaction" suggests a more immediate and visible response than "produced a result," which implies a longer-term effect. Using these synonyms can add variety and precision to your writing, making your meaning more clear and engaging for readers.