86. Which country is the largest producer of rubber in the world?
A) Thailand
B) Indonesia
C) India
D) Vietnam
87. Which country is the largest producer of diamonds in the world?
A) Russia
B) Botswana
C) Canada
D) Australia
88. Which country is the largest producer of emeralds in the world?
A) Brazil
B) Colombia
C) Zambia
D) Zimbabwe
89. Which country is the largest producer of sapphires in the world?
A) Sri Lanka
B) Thailand
C) Madagascar
D) Myanmar (Burma)
90. Which country is the largest producer of rubies in the world?
A) Myanmar (Burma)
B) Thailand
C) Sri Lanka
D) Mozambique