Question: The last time it is said to not have liquified was 1980, the year of the great earthquake.
It has always liquefied.

Answer: no

Question: Five km (three miles) of fine sand from Pornichet to Le Pouliguen stretch in a perfect half-moon, past chic sailing and beach clubs, along an esplanade of luxury hotels with a casino at the center.
There are five kilometers of sand in the shape of a half-moon from Le Pouliguen to Pornichet.

Answer: yes

Question: They were welcomed for their erudite ideas on medicine, astronomy, and astrology.
They held ideas on several scientific fields.

Answer:
yes