Answer:
<h3>The invention of gunpowder.</h3>
Explanation:
- The post classical era often called as post ancient period is the period between 6th century AD to 15th century AD. This period is also known as the medieval period and is known for the various discoveries and inventions made during this age.
- It was during the post classical era China invented the four greatest inventions of all time. They were the gunpowder, printing press, paper and compass.
- The invention of gunpowder changed the whole scenario of warfare. It had a very powerful impact on the ways of battles and warfare all over the world.
It takes three to four years to complete a bachelor's program
D grant recipients do not have to obey a set of guidelines.
I give one, for example: when I was travelling on Malta, I found a lot of Roman remains: catacombs, mosaics, a remain of a Roman house.
Malta is an island so they must have used sea travel to get there.