WORLD HISTORY

Detailed explanation-1: -Petroleum, also known as crude oil, or simply oil, is a naturally occurring yellowish-black liquid mixture of mainly hydrocarbons, and is found in geological formations.

Detailed explanation-2: -The word petroleum was first used in 1556 in a treatise published by the German mineralogist Georgius Agricola. It means, literally, “rock oil, ‘’ from the Latin petra, “rock” or “stone, ‘’ and oleum, “oil.”

Detailed explanation-3: -Petroleum is a broad category that includes both crude oil and petroleum products. The terms oil and petroleum are sometimes used interchangeably.