Which issue do these laws, which were passed by the u. s. congress between 1820 and 1854, have in common?

ba geologist finds four sedimentary rock she determines that no geologic events have shifted the layers she labeles them a,b,c,dbfrom top to bottom

the safahids used force when persuasion to convert from being a sunni muslim to embrace shi'ism was not effective. they also persecute shi'ites who have different views from their imposed teachings.

(d). gave voting rights to free african americans and white women.