en_tn/2ki/15/29.md

Ijon, Abelbethmaacah, Janoah, Kedesh, Hazor, Gilead, Galilee, Naphtali

These are the names of cities or regions (See: rc://en/ta/man/translate/translate-names)

He carried away the people to Assyria

Here "He" refers to Tiglath Pileser, king of Assyria. His army forced the Israelite people to leave their country and go to live in Assyria. (UDB) (See: rc://en/ta/man/translate/figs-explicit)

a conspiracy

A conspiracy is a secret plan by a group to do harm to someone or something.

He attacked him and killed him

Hoshea attacked Pekah and killed him.

in the twentieth year of Jotham

"in year 20 of Jotham" (See: rc://en/ta/man/translate/translate-numbers)