TRADE
ECONOMIES
BARTER
COUNTRY
IMPORTS
SHIP
INTERDEPENDENCE
AIRPLANE
M
D
I
A
I
C
U
I
O
E
E
F
F
T
C
V
N
N
P
B
H
T
J
N
K
A
M
O
R
K
Z
N
M
C
N
N
C
E
A
T
O
T
U
A
A
A
U
Y
N
O
V
T
R
O
F
T
O
G
D
N
H
V
I
I
J
R
F
U
Q
H
I
T
K
E
B
I
N
T
E
R
D
E
P
E
N
D
E
N
C
E
E
H
Y
A
X
A
W
U
E
E
U
L
I
O
D
B
C
O
E
O
R
D
O
N
C
A
S
A
F
X
Q
T
O
M
K
I
B
A
T
O
O
N
Z
F
U
U
E
I
N
J
P
L
A
C
U
F
J
Y
F
N
I
E
N
H
O
P
O
S
R
N
T
Y
X
I
V
J
I
E
X
R
M
W
H
J
T
D
P
P
I
C
I
B
A
I
A
D
I
X
B
R
E
Q
U
O
O
C
M
A
D
T
F
W
E
V
Y
A
R
H
R
X
I
M
P
O
R
T
S
Z
S
S
H
I
P
V
O
