Among other places, they are grown in the US. Hawaii. There are a lot of macadamia farms on the Big island.
Macadamia nuts are grown and harvested in Southern California. The warm climate makes it the optimal location to grow these coveted nuts. They are very delicious and expensive.
india
China
Indonesia
China
worlds largest producer of nickel
Without poring through loads of lists,I am going out on a limb and say Italy is the largest producer.
The United States is the worlds largest producer of salt with about 1/4 of the total salt production in the world.
Nigeria is the largest oil producer in Africa, but the CIA World Factbook lists them as 15th, not 6th. Canada is the worlds 6th largest oil producer.
Iran
Russia, with 7 % of the world production (2010).
Chilleans.
The third largest food producer in the world is Kraft