The major import would be machinery
Bulgaria's major import is oil and methane gas. Its major trade partners are Germany and Romania.
Major import: weapons, ammunition, killing machines from the USA. Major export: Opium, morphine.
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Water
crops
Coal
A major import of Iran is machinery. Machinery makes up almost 20 percent of their imports. Machinery tools and vehicles are also major imports.
The major import of Pakistan is Petroleum, Fats, Electronic accessories and automobiles.
Electronics (from Germany)
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Electronics from Japan is a major imported good for the USA.