Can you give me an example of medicine that developed throughout the 20th century.

yes

Explanation:

In the 20th century, both chemotherapy and radiotherapy were developed as treatments for cancer. Before the development of these treatments, the vast majority of people who developed cancer died of the disease without any hope of being cured.

each played a major role in ending the cold war.

john maynard keynes developed new economic theories in response to the stock market crash of 1929. great depression of the 1930s. first and second world wars. economic boom of the 1950s.