How did the alliance system in europe most likely contribute to the start of world war i?
a. the countries in the alliances sought protection against enemies by sharing military personnel.
b. the countries in the alliances agreed to work together to gain power through colonization.
c. the countries in the alliances agreed to share economic resources based on open trade markets.
d. the countries in the alliances signed treaties agreeing to defend each other in times of war.

D. The countries in the alliances signed treaties agreeing to defend each other in times of war.

Explanation:

There were two fundamental collisions in Europe preceding WWI: the Triple Alliance (Germany, Austria-Hungary, and Italy) and the restricting Triple Entente (the Soviet Union, Britain, and France). These collisions are what made the war heighten from what ought to have just been provincial clash into a war all through Europe and that's just the beginning.

its c

- "the civil rights movements"

- "following the american civil war and abolition of slavery, the united states entered a period known as reconstruction, during which black americans continued to suffer from disenfranchisement, racial segregation, and economic oppression. beginning in the early 1950's, black americans launched a series of major campaigns of civil resistance, emphasizing the need for nonviolent protests and civil disobedience."

"such as the montgomery bus boycott of 1955-56, a campaign launched by rosa parks against the policy of racial segregation of the public transit system in alabama. “sit-ins” became popular across the american south, particularly in greensboro, north carolina, increase national sentiment."

- "the counterculture movement"

- "counterculture began to develop in the united states following the rise of conformity in american culture during the 1950s. by 1963, youth, particularly those of the white middle class, began rejecting the cultural standards and normality of their parents, opting for progressive attitudes instead. the movement gained momentum as the civil rights movement became increasingly successful and as the u.s. military intervention of vietnam began to take a negative turn."

"hippie counterculture moved further into popular culture following the summer of love in 1967 when thousands of people came together in the haight-ashbury neighborhood of san francisco. along with greenwich village in new york city, haight-ashbury became a hub for the counterculture movement."