What disease impacted the population in the new world

When the Europeans traveled over to the new world in search for expansion, they brought over several deadly plagues, viruses, and bacteria. Those that had the largest impact were: smallpox, measles, typhus, and cholera. The Native Americans had no developed immunity for these diseases and thus suffered immense casualties.

I'm not sure what exact disease you're looking for but I hope I narrowed it down for you to those four :)

so the story tells of someone named kaushik choudhuri, but he does not narrate the story, a girl named hema does. hema tells the story in a second person point of view because you (the reader) are supposed to be the boy named kaushik.

here's an excerpt i found: "i was ushered into the fitting room, your mother watching approvingly as i took off my coat and sweater and tried on the bra."

source:

hey i did something like that before, what is the quesiton?