You Do Need power plug adapter while traveling from American Samoa to Palestine.

Here is Why You Need An Adapter

The outlet and plug type used in Palestine are C and H and in American Samoa are A, B, F and I. This is how they look like.

American Samoa

In American Samoa, outlets of type A, B, F and I are in use.

Type A

Type B

Type F

Type I

Palestine

In Palestine, outlets of type C and H are in use.

Type C

Type H