I the years from 1850 to 1900, the life expectancy in united states increased for about 13 - 15 years.
Back then, the public health and sanitation projects did a lot of works in lower-class community's environment
Since you provide no options, you can choose the one that ranged between those numbers
hope this helps
<span>awarding loans and land grants to private companies to build the railroad.</span>
The answer is : Reduce labor costs
Answer:
The Open Door policy was a statement of principles initiated by the United States in 1899 and 1900. It called for protection of equal privileges for all countries trading with China and for the support of Chinese territorial and administrative integrity. The statement was issued in the form of two circulars (diplomatic notes), dispatched by U.S. Secretary of State John Hay to Great Britain, Germany, France, Italy, Japan, and Russia. The Open Door policy was a cornerstone of American foreign policy in East Asia until the mid-20th century.
Explanation:
