Classical
China
was
centered
on
the
____________________
____________________
(
Yellow
River
)
and
was
geographically
isolated
.
Migratory
invaders
entered
China
from
the
North
.
The
____________________
____________________
was
built
for
China's
protection
by
Qin
____________________
____________________
as
a
line
of
defense
against
____________________
.
China
was
governed
by
a
succession
of
ruling
families
called
____________________
.
Chinese
rulers
were
considered
____________________
,
but
they
served
under
a
____________________
of
____________________
only
as
long
as
their
rule
was
just
.
Chinese
culture
began
around
1500
B
.
C
.
E
.
Of
Chinese
contributions
to
civilization
,
____________________
and
Taoism
are
among
the
most
noted
.
The
____________________
____________________
facilitated
trade
and
contact
between
China
and
other
cultures
as
far
away
as
____________________
.
Contributions
of
____________________
China
are
civil
service
system
,
____________________
,
porcelain
,
and
____________________
.
The
____________________
service
system
allowed
those
other
than
nobility
to
hold
public
office
.
This
system
made
____________________
highly
respected
in
Chinese
society
and
provided
talented
people
to
run
the
____________________
.
