Stage 6 started the slow and painful recapturing of the capital of seoul, which then turned into a stalemate. general matthew ridgway, united nations forces, and his troops referred to this stage of the war as the “meatgrinder.” explain the use of this term and its implications.

The term 'meatgrinder' highlight Matthew Ridgway's troops ability.

At that time, his troops was known for their ability in going to the battlefield's front line and   inflicting maximum damage toward the enemy while keeping major units safe.

The enemies that in gets in the way of his units often eliminated into pieces like collection of meats that being processed with meat grinder .

explanation:

with the profits from the european sales, merchants purchased europe's manufactured  goods, including tools and weapons. then the merchants shipped those manufactured  goods, along with the  american  sugar and rum, to west africa where they were bartered for  slaves.