Simplify the following text for a Grade 5 native English-speaking person.
Original: Midgard ( an Anglicised form of Old Norse MiÃ garÃ r ) is one of the Nine Worlds and is an old Germanic name for our world and is the home of Humans , with the literal meaning `` middle enclosure '' .
Simplified: Midgard is an old Germanic name for our world . Midgard means `` middle enclosure '' .