Answer:
The relationship between Roman and greek gods is that they were all the same gods, but they had diffrent names. If i were to say Zues, Poseidon, and hades, in Roman mythology, their names would be Jupiter(zues), Neptune(Poseidon) and Pluto(hades)
I believe it was because they owed money
Answer:
In his book, Aryabhata, he suggested that the Earth was sphere, containing a circumference of 24,835 miles (39,967 km). Aryabhata also mentioned that reflected sunlight is the cause behind the shining of the Moon.