Buddhism was india's dominant religion in 100 bce, and then it o expanded to become the dominant religion in all of asia. o declined in india but remained strong in other areas of asia, o spread to asia but did not take hold throughout the continent. o became obsolete when hinduism spread into asia.

expanded to become the dominant religion in all of Asia

Explanation:

Option: expanded to become the dominant religion in all of Asia.

Explanation:

Buddhism began to spread over the centuries, first to Southeast Asia, then to China and the rest of Asia in several ways. Buddha's teaching spread throughout Asia through peaceful way without any violence. Buddhism found its way to China through the Silk Route. King Ashoka sent monks to several territories to spread the teachings of the Buddha, especially in Sri Lanka.

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain