Answer:
The Edit of Milan contributed to the growth and longevity of the Roman Empire because it made it safe for the larger Christian community to practice their religion.
EXPLANATION:
The Edict of Milan was a letter that the Roman Emperors "Licinius and Constantine", wrote and signed on February 313 AD. In this letter the emperors proclaimed religious tolerance for the Roman Empire, mainly destined to make the large amount of Christians that the Empire had, feel safe.
Ferdinand Magellan was the first (at least his crew) to successfully lead an expedition to circumnavigate the world. (he died on the voyage, but ~3 sailors made it back i believe, forgot the number of sailors, but very little)
hope this helps
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The period saw major technological advances, including the adoption of gunpowder, the invention of vertical windmills, spectacles, mechanical clocks, and greatly improved water mills, building techniques (Gothic architecture, medieval castles), and agriculture in general (three-field crop rotation)
