Were there a lot of imports at that time in terms of materials or labor or food? If not, I don’t really see how money flowing in from abroad actually changes the economy in this area. If the wood is harvested in America and the workers are in America and the wood and workers are available, then any amount of money value generated by everyone else will be sufficient to pay them, unless there is a significant stream of imports that need to be paid for (which I’m not aware of in this time period).

What could have made a big difference is if foreign competition arose for American materials and land, which it did. But that is under our control, we collectively can choose whether to allow them to buy it or not, and whether to let people in at a rate that outpaces materials discovery and harvesting capabilities.

We also restricted materials harvesting quite a bit during this time period, for example I believe a lot of forestry protections were not in place yet.