The western roman empire collapsed for many reasons including:

separate gobernment

Explanation:

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interest groups send representatives to state capitals and to washington, d.c. to put pressure on members of congress and other policymakers. they engage in lobbying, or the organized process of influencing legislation or policy. lobbying can take many forms. interest groups can testify in congressional hearings.

a. poison gas was sprayed over battlefields by airplanes to weaken enemy positions before major attacks.