What part did the alliance system play in the events that led to World War I? A. Countries that were in alliances with other countries were obligated to support their allies when war was declared.

B. Alliances enabled countries to cooperate in establishing large colonial empires.

C. Countries that were in alliances with other countries were guaranteed that they would not have to go to war.

D. The countries in one alliance system were not allowed to trade with countries in competing alliances, which further divided Europe.

I swear I'm good at history

B. Alliances enabled countries to cooperate in establishing large colonial empires.

Explanation:

countries that were in alliances with other countries were obligated to support their alliance when war was declare

its many islands, high mountains, and remote peninsulas isolated population centers.

the neolithic revolution began the era of permanent societies, the reliance on the limited amount of land gave way to political organization and this political organization caused social organization which was divided by amount of property and power.

the neolithic revolution (new stone age) was the first agricultural revolution. it was a gradual change from nomadic hunting and gathering communities and bands to agriculture and settlement. this period is described as a "revolution" because it changed the way of life of communities which made the change.

sentence:

let´s farm and domesticate these animals so we do not be hunting in the woods all the time