microcosm
noun
[ ˈmʌɪkrə(ʊ)kɒz(ə)m ]
• a community, place, or situation regarded as encapsulating in miniature the characteristics of something much larger.
• "the city is a microcosm of modern Malaysia"
Origin:
Middle English: from Old French microcosme or medieval Latin microcosmus, from Greek mikros kosmos ‘little world’.