A. About 4,000 years ago.
B. About 3,000 years ago.
C. About 2,000 years ago.
D. About 1,000 years ago.
A. The small bowl was put above the large bowl.
B. The large bowl was put above the small bowl.
C. The small bowl was put inside the large bowl.
D. The large bowl consisted of two equal parts.
B. Brass doors.
C. Drops of water.
D. Metal balls.