If your question is intended to ask "Which continent is least developed or inhabited?" then the answer is Antarctica.
malaysia
The top ten limestone producing countries are China, the United States, India, Japan, Brazil, Russia, Iran, Turkey, France, and Italy.
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There are no countries in the US.
The top ten rubber producing countries in the world are Thailand, Indonesia, Vietnam, India, China, Malaysia, Philippines, Sri Lanka, Brazil, and Côte d'Ivoire. These countries are major producers of natural rubber, contributing significantly to the global supply.
There are likely 10 countries in the top 10
The top ten animals that mate for life according to live science are: Foxes Dogs Human Goats Sheep Duck Hen Lion Tiger Cat
The top salt-producing countries are the US, Britain, Russia, Germany, France, India and China.
South Africa is the biggest contributor to the worlds gold supply.
There are more than 10 cattle producing counties east of the Mississippi. Tennessee and Kentucky have the most counties.
Iowa, Illinois, Nebraska, Minnesota, Indiana, South Dakota, Kansas, Wisconsin, Ohio, and Missouri are the top ten. (Data based on 2009 crop year)