[beezlebroxxxxxx]

> I don't know much about finance and global economics.

Neither do most people on HN. In fact, "global economics" is actually filled to the brim with wild speculation. Most people have very little idea how the future will work out, or overemphasize a "model" view that abstracts the reality of global politics and economics into something like a simple y = mx + b equation and then insist on the inevitability of their model.

You need to think more about power. Where does the US's power come from? Is that likely to change? How will the political situation change in America and what effect will that have on the global reality of US power and, crucially, the perception of US power abroad? Will the USD remain the defacto standard global currency and reserve? The further you get into the future the less certain we can be about any of these questions beyond simple speculation.