Final answer:
The Office of War Information (OWI) was successful at associating nearly everything citizens did to winning the war through their propaganda efforts.
Step-by-step explanation:
The agency that was successful at associating nearly everything citizens did to winning the war was the Office of War Information (OWI). The OWI was a government agency tasked with improving morale and managing the public image of the war effort. They utilized various forms of propaganda, such as films, radio broadcasts, and posters, to mobilize public opinion and support for government initiatives.