EMPIRE
ROMANS
AZTECS
GREEKS
MAYANS
CULTURE
IRRIGATION
EGYPTIANS
PYRAMIDS
CIVILIZATION
Y
C
X
O
E
A
T
S
I
A
K
Z
R
Q
H
I
I
P
A
U
L
U
V
W
Z
D
A
N
S
R
M
V
Z
I
R
R
I
G
A
T
I
O
N
N
I
I
I
Z
E
O
U
J
C
I
E
C
O
I
A
U
O
L
O
V
F
I
X
I
U
C
U
U
C
I
J
O
I
Q
U
E
U
V
E
H
S
L
M
I
T
N
J
Z
U
U
G
J
F
I
D
C
T
P
B
P
D
U
A
G
P
I
W
T
I
F
E
U
B
Z
Y
E
A
T
D
W
S
U
M
W
F
X
R
Y
S
G
R
D
I
O
M
Q
A
E
U
S
V
E
N
G
E
I
H
O
O
E
R
O
N
W
H
K
A
Z
E
O
P
H
N
K
Y
D
E
B
Q
U
M
O
D
E
O
M
G
E
P
O
S
O
E
U
O
W
I
R
J
X
E
E
S
H
S
A
A
L
R
X
M
A
Y
A
N
S
L
T
O
U
E
U
S
G
R
E
E
K
S
F
P
