Which of the following was most influential in the consolidation of national states in europe in the nineteenth century? a. reaction to enlightenment ideals and the revolutions those ideals inspired b. cooperation between the roman catholic, orthodox, and protestant churches c. the inauguration of the european community d. nationalization of the means of production or private property.

The correct answer should be A. Reaction to Enlightenment ideals and the revolutions those ideals inspired

Romanticism came as a reaction to enlightenment. The ideas of nationality and homeland started developing more and a pride in being a member of a country started growing. This led to numerous new revolutions since people wanted to be independent and have their own countries and countries like Austria-Hungary and the Ottoman Empire lost huge amounts of influence.