according to nutrition labeling laws, what two minerals must be listed on the package label as a percent daily value

Labelling the nutritional values of food is important as they are the description of the nutrient content that will guide the consumers. Thus, the nutrition information should be truthful and not mislead the consumers. 

In this regard, nutrition labelling laws exist to regulate and check the information content of nutrition labels. 

Nutrition label is the list of all the vitamins and minerals that are present in the food. The Percent Daily Value is also included as it tells us how much of a vitamin or mineral per serving of food contributes to our total daily requirement.

Calcium and Iron are the two minerals that are required to be included in the label, together with Vitamins A and C.