D probably Australian aboriginals were not exposed to these viruses and their body couldn’t fight it off
Great plains is your answer looked it up
Answer:
Serving until his death in May 1964, Nehru remains India's longest-serving prime minister. He was succeeded by fellow Congressman Lal Bahadur Shastri, whose 1 year 7-month term also ended in death.
I think the answer is option C, if I'm wrong please tell me