Many people found slavery “un-american” because it contradicted the sentiments expressed in the declaration of— a. sentiments b. freedom c. independence d. american revolution

C.Independence

Explanation:

They also did this in the constitution with the declaration of independence

answer; ///i believe that the correct answer is refrigerants,(like r12) and aerosol

a. because the u.s. was the leading with the most technology, economy, etc. also was teamed with other allies witch boosted the economy and materials to improve technology and use it.