Which historical event is known that have had a major effect on the delivery model of nursing care?

The shift from home-based care to hospital-based care during the 1930s is widely recognized as one of the most transformative events in the history of nursing care delivery. During the Great Depression, hospitals began offering prepaid insurance plans (the forerunner of Blue Cross), which made hospital care financially accessible to a larger portion of the population. This drove a massive movement of patients from home settings into hospitals, fundamentally reshaping how nursing was organized, staffed, and delivered. Nursing transitioned from a predominantly private-duty, home-based practice into an institutional, team-based model, giving rise to structured nursing units, shift work, and hierarchical nursing roles. The other options, while historically significant, did not reshape the delivery model of nursing care to the same degree. Patient empowerment in the 1970s and 1980s influenced informed consent and patient rights rather than the structural delivery model. The Civil War led to advances in wound care and prompted nursing reforms championed by figures like Dorothea Dix, but it did not fundamentally change the delivery model. The emergence of antibiotic-resistant organisms in the 1990s influenced infection control protocols but not the overarching care delivery framework. Therefore, the 1930s hospital shift is the most accurate answer.