Title: Hokkien.
Question: What was responsible for bringing the language of North middle China to the Fujian region?

Title: Nutrition.
Question: Who criticized Galen in the 1500s?

Title: Anthropology.
Question: What questions came to occupy a central place in cultural and social anthropology?

Title: Railway electrification system.
Question:
Besides speed and size what else the low voltage of DC system can effect?