Answer:
for the development of computer assisted tomography.
Explanation:
The 1979 Nobel Prize winners for Medicine, Sir Godfrey Hounsfield and Allan Cormack won the prize "for the development of computer-assisted tomography."
This is evident in the fact that Sir Godfrey Hounsfield was an English Electrical Engineer, while Allan Cormack was widely known as a South African American physicist.
They both come together to "develop computer-assisted tomography" which is used to provide detailed information about the structure and anatomy of human organs.
A common feeling of those in Angel Island was that the US police and military on Angel Island was evil and that they were oppressing those who wanted to enter the country. He would probably describe how they would often get beaten up or how disease would easily spread since they were on an island or how there wasn't enough food.