When was the metric system made legal in the u. s. was this mandatory?

Which statement accurately describes a difference between the declarationof independence and the u.s. constitution? a. the u.s. constitution established rules for the u.s. government,while the declaration of independence did not.b. the u.s. constitution listed the colonists' reasons for rebellingagainst great britain, while the declaration of independence didnot.c. the u.s. constitution is based on ideals from the enlightenment,while the declaration of independence is not.0d. the u.s. constitution created a very weak central government,while the declaration of independence created a strong one.

What is the title of the head of thr department of defense?

Which of these rose during the great depression?