North American Indians used smoke signals to send messages . Помогите составить к этому предложению 5 типов вопросов ( английский)​

1.

Who used smoke signals to sand messages?

2.

Why North American indians used smoke signals?

3.

What North American indians used to send masseges?

4. Is North American indians used smoke signals to send masseges?

5.

What indians used smoke signals to send masseges?