One reason for the tension among the europea

ension among the european powers was their intense pride in their

homelands, called

a. imperialism.

c. progressivism.

b. nationalism.

d. socialism.

B. nationalism.

Explanation:

The nationalism that originated in the times of the French Revolution changed over the years. By the beginning of the 20th century, most European peoples identified with a nation state and were willing to defend or go for interests of a homeland.

The nationalism fueled competition over economic, social aspects, and was best explained by the rivarly between the French and the Germans.

Prussian -French war caused the tensions to increase among the former.

The rivalry was also felt between the English and the Germans over the seas. The increased trade and foreign trade also was a important force that brought tensions in other continents.

The concept of Nationalism emerged to the most, in the military propagandas, and the racial and ethnic policies from the Central `powers.

A fierce state of things promoted a national army in  numbers that were unprecedent to the times- and the war effort ultimately was propeled by nationalistic groups that prevailed among societies.

i would say d out of common sense

nothing certain is known about what happened, but it seems that the country declined gradually, perhaps due to bad government, or, more likely, due to a series of bad harvests, which resulted in widespread and recurrent famine.