"Just as the Egyptians made G‑d’s firstborn (the Israelities) suffer, G‑d punished - measure for measure - the Egyptians’ firstborn. All the firstborn would lose the life-energy that until then kept them alive."
https://chabad.org/holidays/passover/pesach_cdo/aid/5358334/jewish/Why-Did-G-d-Smite-the-Firstborn.htmThe fate of Egypt was the fate of Babylon was the fate Rome was the fate of Russia was the fate of New Rome, Babylon USA.