The widespread acceptance that bacteria causes diseases helped lead to a public health movement in the late nineteenth and early twentieth centuries. This movement eventually brought sewers, clean drinking water, and garbage removal to all U. S. cities. The public health movement in the United States in the late nineteenth and early twentieth centuries was like a technological advance to the country's production possibilities, since both expanded secured the economy's productive capacity, the former by increasing the nation's degree of sophistication effective workforce .

1. expanded

2. effective workforce

Explanation:

The widespread acceptance that bacteria causes diseases helped lead to a public health movement in the late nineteenth and early twentieth centuries. This movement eventually brought sewers, clean drinking water, and garbage removal to all U.S. cities.

The public health movement in the United States in the late nineteenth and early twentieth centuries was like a technological advance to the country's production possibilities, since both EXPANDED the economy's productive capacity, the former by increasing the nation's EFFECTIVE WORKFORCE .

answernaturalistic observation;