What was the significance of rosie the riveter during world war ii?

Rosie the River was the one who was used during the World War 2 to place advertisements, which encouraged women to come out and contribute their quotas to the ongoing war. She was the center of the campaigns which were targeted at getting women to join the workforce during the war in order to fill gaps that were left by men who are at the war front.She was a standard image of a working woman. 

Spanish conquistadors demanded labour from natives.