How did innovations in engineering most contribute to the lasting survival of the Roman Empire?

They helped the empire create alliances.
They helped the empire spread its culture.
They helped the empire expand its territory.
They helped the empire build a stronger military.

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

because mexico wanted to choose a centralized location

they died because of a disease during the first spanish colonies.

the answer is prolly b