As steel replaced iron, people also began looking for new fuels. Which of the following fuels became popular in the late nineteenth century?

coal

nuclear energy

wood

petroleum

petroleum

Explanation:

nuclear energy is in the future. wood have been around us. coal everyone uses it.

explanation:

these are the geographical features of the gupta empire.

1)it inherited the land owned by the mauryan empire.

2)one obvious difference between the two empires is that the gupta empire was smaller that the mauryan.

3)the gupta empire is located in the northern region of the subcontinent underneath the himalayan and hindu kush mountains.

the gupta empire, marked by extensive inventions and discoveries that contributed to hindu culture, in subjects such as science, technology, engineering, art, dialectic, literature, logic, mathematics, astronomy, religion, and philosophy.

this period was also known as the golden age of india

- "the most famous structure by far at saqqara is djoser's step pyramid. dating from the 3rd dynasty (2667—2448 bc), it was the first all-stone complex ever built on earth."

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