The life expectancy of people around the world has increased during the last 100 years. The technology change and the way that people live are the important reason. It is said that the development of the medical science make great responses. In 1900s, most of people around the world had suffered from fatal disease such as smallpox, malaria, and so on. Furthermore, the invention of penicillin has also change the world. It is such an efficient medicine that can cure most of the bacteria-caused disease. It even helped allies win the World War 2 against axis, which has no antibiotic to deal with the injuries. Moreover, the developed countries have more medical resources and better welfare policies
The life expectancy of people around the world has increased during the last 100 years. The technology change and the way that people live are the important reason. It is said that the development of the medical science make great responses. In 1900s, most of people around the world had suffered from fatal disease such as smallpox, malaria, and so on. Furthermore, the invention of penicillin has also change the world. It is such an efficient medicine that can cure most of the bacteria-caused disease. It even helped allies win the World War 2 against axis, which has no antibiotic to deal with the injuries. Moreover, the developed countries have more medical resources and better welfare policies