Why did the german government issue a single currency for all germany

To make trade and banking easier. But also because coins have been used as means  of control and propaganda since this very invention , Kaiser  William I appeared in the coins.

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: