Final answer:
In 1970, imports and exports accounted for 11% of U.S. GDP. Given that 1947 is closer to this date, it's likely that trade represented a smaller percent of U.S. GDP in 1947, although the exact figure for 1947 is not provided.
Step-by-step explanation:
While detailed information specifically for the year 1947 is not provided, there is data available indicating that in 1970 imports and exports made up 11% of U.S. GDP, and this increased to 32% by more recent measures. Given that the question centers around the year 1947, which is closer in time to the 1970 benchmark, it can be inferred that the percent would be smaller than the 11% noted for 1970. Additionally, it's important to highlight that by the late 1970s, the United States had started importing more goods than it exported, and concerns over the impacts of globalization on the economy and job markets were rising.