1)
What does "Imo" refer to?
1.
Rashi: Verse 7 said that Yehoshua will apportion land to nine Shevatim and [the second] half of Menasheh. [Moshe apportioned to] the first half of Menasheh, and Reuven and Gad. Radak
2)
Why does the verse repeat "Asher Nasan
1.
Malbim: They received like Moshe gave; Yehoshua did not change this.