1) America, metaphorically 2) Crucible 3) Culture-blending metaphor 4) Funk album by American artist 5) The US, metaphorically 
The melting pot is a metaphor for a heterogeneous society becoming more homogeneous, the different elements `melting together` into a harmonious whole with a common culture. It is particularly used to describe the assimilation of immigrants to the United States. The melting-together metaphor was in use by the 1780s. The exact term `melting pot...
The idea that ethnic differences can be combined to create new patterns of behaviour drawing on diverse cultural sources.
[n] - an environment in which many ideas and races are socially assimilated
Melting Pot is a metaphor people use to describe a society where various types of people blend together as one.
noun an environment in which many ideas and races are socially assimilated
A term used to refer to a pluralistic society in which people who originally come from different societies blend together to form a new society.