Review the graphs below of US trade of goods imbalances, current account imbalances, and net international investment position. Then, answer the following questions. 1. Currently, is the US a borrower or lender nation? Briefly explain. 2. Currently, is the US a debtor or creditor nation? Briefly explain. 3. Can a country run a perpetual trade deficit? Are the US goods trade deficits sustainable? Similarly, are the US current account deficits sustainable over the longer term? 4. Is the US net foreign indebtedness sustainable over the longer term