Every year a bear travels to the same river bank to fish salmon because he has always been rewarded with a bounteous harvest. Starting three years ago, the fish supply in that area began to dwindle due to construction. Since the bear is no longer rewarded for his journey, he has stopping going to that river bank. This is an example of

political parties perform an important task in government. they bring people together to achieve control of the government, develop policies favorable to their interests or the groups that support them, and organize and persuade voters to elect their candidates to office.

explanation:

imperial crisis leads to civil war.

roman forces withdraw from britain as goths attack rome.

odoacer topples romulus augustus

huns attack the empire and drive german peoples ahead of them.