It would… if the annexed territories became a special economic zone where, magically, slavery was made completely legal.
For an example what might be yet to come, you could take a look at the horrifying history of the construction of the White Sea-Baltic Canal which happened in a similarly hostile environment.

“Keep, ancient lands, your destroying Trump,
Give me your fired, your queer,
Your huddled masses yearning to breathe free…”

Maybe there was a more important need for it. ( ͡° ͜ʖ ͡°)

Now, now. The rich, especially in the US, will become richer by a lot. And that’s all that matters… for them.

Tangentially related, he once said: “I had a German tell me one time, he said, the two pillars for us are NATO and the EU. NATO is for life, EU is for quality of life.” I wonder how that’ll play out in the near future.
EDIT: corrected link.