what precedent did fdr set regarding executive orders? how powerful they could be that they could abolish…

Brief Explanations:

Executive orders are directives from the president. FDR (Franklin D. Roosevelt) used executive orders in a way that demonstrated their potential strength. Abolishing laws is mainly the legislature's role (Congress makes laws, can repeal them). Overrulling courts is against the separation - of - powers principle (judicial review is a court's power). But FDR's use of executive orders, especially during crises like the Great Depression (e.g., New Deal - related orders), showed how impactful (powerful) executive orders could be in implementing policy.

Answer:

how powerful they could be