The correct answer to this open question is the following.
Although there are no options attached we can say the following.
The Gupta administration was similar to the present-day administrative system in India in that both established a central form of government, developed a bureaucratic administrative system, and both have a powerful military system to control such as a large territorial extension.
The Gupta Empire was founded by Sri Gupta. This ancient Indian empire had its brightest moment during the Golden Age of India, because at that time Indian people made important discoveries in mathematics, art, literature, engineering, philosophy, and astronomy.
Answer:
Easier to manufacture
Explanation:
Because there are no angles for alignment, the round shape makes these heavy covers easier to put back on once they're taken off. Round covers are also easier to manufacture. But the main reason manhole covers are round is so they won't accidentally fall into the manhole itself.