In order to add a salad bar to a school lunch menu for students with restricted diets, new materials orsuch as a refrigerator or a bar, would be needed.

byzantine empire is the answer i think you are looking for.

hope this : )

the enslaved people onboard suffered from illness with some frequency

this defines the ability for a flex item to grow if necessary. it accepts a unitless value that serves as a proportion. it dictates what amount of the available space inside the flex container the item should take up.

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this statement is   true