Batak
is
a
____________________
term
used
to
identify
a
number
of
closely
related
Austronesian
ethnic
____________________
predominantly
found
in
North
Sumatra
,
Indonesia
____________________
speak
Batak
languages
.
The
term
is
used
to
include
the
Karo
,
Pakpak
,
Simalungun
,
Toba
,
Angkola
,
and
Mandailing
____________________
are
related
groups
____________________
distinct
languages
and
traditional
customs
(
adat
)
.
