Ménière's disease turn, is strongly associated with developing MD, but not everyone with EH develops MD: "The relationship between endolymphatic hydrops and Meniere's disease is not a simple, ideal correlation." Additionally, in fully developed MD the balance system (vestibular system) and the hearing system (cochlea) of the inner ear are affected, but there are cases where EH affects only one of the two systems strong enough to cause symptoms. The corresponding subtypes of MD are called "vestibular MD", showing symptoms of vertigo, and "cochlear MD", showing symptoms of hearing loss and tinnitus. The mechanism of MD is not fully explained by EH,
What Is a Nation? often adopted the religion and manners, and married the women, of the people they conquered. He notes that France was quite ethnically diverse during the French Revolution. For example, "at the end of one or two generations, the Norman invaders were indistinguishable from the rest of the population". Nonetheless, they had a profound influence, bringing with them "a nobility of military habit, a patriotism" which did not exist before. - Renan then states what has become one of the most famous and enduring ideas of the essay. "Forgetfulness, and I would even say historical error, are essential in the creation