Answer:

1920 :)

Explanation:

Farbenindustrie in Germany in 1920 was the first company to synthesize urea commercially, using ammonium car- bamate. The first major production in the United States was in the 1930's by Du Pont at Belle, West Virginia (Church, 1964). Use as a fertilizer was initiated in 1935 (Berliner, 1936).

Explanation:

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