The answer is all of these
What fuelled the great explorations of Spain and Portugal weren't because they liked doing it, it was because silk and spices were super expensive to be traded along the Silk Road, past Arab states that imposed hefty taxes, and had to be shipped all the way across the Mediterranean Sea, where ports made fortunes by levying even more on the goods.
The roots of Hinduism are found in India and Nepal if you means descenders by roots.
Either option C or D, made the most sense
They planted crops in the fertile river banks
