immigration question...urgent

[joanna bujes <jbujes@xxxxxxxxx>]

OK. My parents emigrated to the USA. I was born in Romania and came with
them. My sister was born in the USA.

Are my parents "first generation" immigrants? or 0th generation?

Is my sister "first generation" or "second generation"?

You get the drift? How exactly do you define first, second, nth
generation of immigrants?

It's urgent cause my sister is taking a state test tomorrow and it might
come up.

Thanks,

Joanna