Hindu! The name was given only in later period as these people lived in the bank of Ganges that is, sindhu plains.. Initially it was named as 'Sanadhana Dharm'. They had six deities to worship. Hence...
the reason is because some parts of the world does not get as much heat from the sun as other parts do.Forexample, the tropics they are always hot most of the time,because the sun is directly over...