Who took the Northern Kingdom Israel into captivity?

Initially in 740 BCE the northern part was absorbed into the Assyrian Empire. Then in 722 BCE, the southern part and capital Samaria was absorbed. The aristocracy was deported to Assyria where it was used to rule another part of the empire, and the aristocracy there brought in to take on ruling the northern 10 tribes. The Assyrians use this technique so that conquered territories did not have sympathetic aristocracies which might promote rebellions. The Babylonians copied this technique when they later took over Judah and Benjamin in the south, deporting the aristocracy to Babylon and importing a foreign aristocracy to rule them.