Why does International Economies being more Connected be an Advantage or Disadvantage?

-Firms and Economies can Grow on a New Scale and Ways -Countries now Dependent on each other - so therefore Crisis in One Nation can affect another. [2008] -Global Trade Imbalances also means that Politics gets Negatively Impacted. America is in a Deep Current Account Deficit with China, so America posing up Tariffs to the Chinese will harm the 2 Superpowers and slow down Economic Growth and Trade