Final answer:
The early 1900s occupational health nurse mainly focused on caring for injured workers due to the high rate of industrial injuries. Germany was the first to offer health insurance for workers, and public health in industrial cities was improved through better sanitation and programs. Early 20th-century Australian policies were exclusionary, most notably against non-Europeans.
Step-by-step explanation:
The focus of care for an occupational health nurse in the early 1900s was likely injured workers. This was a time when industrialization was at its peak, and workplace injuries were common. Workers' compensation laws were just beginning to be established, and the need for occupational health nurses arose as a means to care for these injured workers, help in their recovery, and facilitate their return to work.
In response to the other provided questions, Germany was the first country to provide health insurance for workers, under Chancellor Otto von Bismarck in the 19th century. Additionally, various forms of governmental and non-governmental initiatives attempted to improve sanitation and public health to prevent the spread of disease in the industrial city. Lastly, in the early twentieth century, Australia attempted to exclude non-Europeans through policies like the White Australia Policy.