Buddhism was introduced into China?

In the Chinese Darkages

Explanation: People sought to find comfort

Buddhism was introduced into China because Emperor Ming sent his envoys to Tenjiku to welcome the Dharma, and Buddhism spread in China. With the opening of the Silk Road, Buddhist ideas are likely to be sporadic in this period through the western region of the caravan spread to China. During the Emperor Ming Period of the Eastern Han Dynasty, Emperor Ming had a dream in which a golden man was flying towards him. Later, in court, he told Ason about it, and a minister told him it was the Buddha of Tenjiku. So Emperor Ming sent envoys to Tenjiku to welcome the Buddha, and Buddhism spread throughout China.

Explanation:

"B. They said there was no more room in the country to take in more immigrants" was generally not a reason given by anti-immigration advocates, since the nation was still expanding so this would be a futile argument.