Events that took place in India from ancient times up to the 1970's place them in order. I NEED HELP PLACING THESES IN ORDER A: The caste system develops
B: The Macedonian Alexander the great invades and unites the states of India
C: The Dravidians are living on the continent of India
D: The Europeans take control of India
E: India is tuled by Moguls
F: The Gupta dynast is set up by Chandragupta
G: India is invaded by the Mongols from Central Asia
H: India is invaded by Indo-Ayrans
I: India reaches its Golden Age