Death rates in the 20th century 1 year old. In 1999, at the end of the century, the infant mortality rate in the United States declined more than 90% to 7.2 deaths per 1,000 live births. Similarly, maternal mortality rates declined almost 99% to less than 0.1 reported deaths per 1,000 live births. There are a variety of causes for this steep decline in death rates in the 20th century: Despite these tremendous decreases in infant mortality and maternal mortality, the 20th century experienced significant disparities between minority death rates compared to death rates for white mothers. In the 1900s, black women were twice as likely
20th century in science his group achieved the first total synthesis of Taxol. In 1995, Eric Cornell and Carl Wieman produced the first Bose–Einstein condensate, a substance that displays quantum mechanical properties on the macroscopic scale. One of the prominent traits of the 20th century was the dramatic growth of technology. Organized research and practice of science led to advancement in the fields of communication, engineering, travel, medicine, and war. 20th century in science Science advanced dramatically during the 20th century. There were new and radical developments in the physical, life and human sciences, building on the progress made in the 19th century. In