1841 william henry patents the calotype process, exposing wet (instead of dry) paper for a much shorter amount of time with a sharper image. this is the first negative-positive process making possible the first multiple copies.

Investigate the equal rights amendment on your own. then, consider the factors that affect change, and explain two key reasons that the equal rights amendment might not have been ratified, based on the ideas in this lesson. justify your reasons with cited sources.