[skalpelis]

In just means that the US isn't a manufacturing economy. Manufacturing is a very small part of US economy but that doesn't mean that in absolute numbers it might be higher than other countries', especially if most of the goods manufactured were with high added value (e.g., the aforementioned jet engines).

[ilkhd2]

In absolute numbers economy of China is much, enormously bigger than economy of Iceland. Not per capita, however.