I do not have your choices of "the following" Here are some reasons I learned: Christianity, empire was too big and became hard to manage, there were many nonromans attacking parts of empire- Goths, the emperors themselves were weak or insane intrigue was rampant.
It took place in Belgium.
A peninsula is a land mass surrounded by water on three sides.
Supporters of the Prohibition, such as the preacher Billy Sunday, expected that the Prohibition would encourage people to become religious, decrease the violent crime rate, fix the problems of society, and put the liquor distillers out of business. Widespread religious fervor and religious revival were central features of the Prohibition era. Preachers announced that the millennium was coming soon and, as a result, people stopped drinking hard spirits and attempted to live a life of perfection. This in turn, decreased the violent crime rate and attempted to fix the problems of society.