Precambrian time, period of time extending from about 4.6 billion years ago (the point at which Earth began to form) to the beginning of the Cambrian Period, 541 million years ago. Precambrian time encompasses the Archean and Proterozoic eons, which are formal geologic intervals that lasted from 4 billion to about 541 million years ago, and the Hadean Eon, which is an informal interval spanning from 4.6 billion to 4 billion years ago. The Precambrian represents more than 80 percent of the total geologic record.
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The Maurya Empire was centralized by the conquest of the Indo-Gangetic Plain, and its capital city was located at Pataliputra (modern Patna). Outside this imperial center, the empire's geographical extent was dependent on the loyalty of military commanders who controlled the armed cities sprinkling it.
Explanation:
The Mauryan Empire was the first major empire which encompassed Afghanistan and Balochistan in north west to Bengal in the east and to south of the country.
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The Second Punic War was fought between the Romans and the Carthaginians between 218 and 201 BC. The Romans then went on to a several-year war of wear and tear, gradually destroying or neutralizing the allies and main colonies of Carthage, and finally, under the leadership of Publius Cornelius Scipionus Africano, they won the Battle of Zama. This war definitely decided the struggle of both cities for dominance in the Mediterranean in favor of Rome.
Due to the complete destruction of Carthage in the Third Punic War in 146 BC and the long-term hegemony of the Roman Empire in the Mediterranean, no historical sources have been preserved describing the course of the war and its background from a Carthaginian or truly neutral point of view. Historians can therefore rely only on the works of Greek and Roman ancient authors and must therefore interpret them very carefully.
Coal because they fueled the factorys, locomotive and ships.
