Answer:
I believe your answer would be Socialism
Explanation:
Germanic tribes such as the Franks, Ostragoths, Vandals and the Visigoths were surrounding it and weakening it by spreading into their territory, and also it was having internal governmental issues and struggles for consolidation of power.
To basically make sure you've made your claim clear, and to re-instate your claim just one last time, and add any examples you've missed.
When writing an essay like this, I would devote one paragraph to talking about how supply and demand dictate prices, and another paragraph to how international trade fuels economic growth.
