Establishment: n. creating a subset(s) which is frequently an organization and/or system and/or rules for a hoped for permanent duration
Establishing or creating trade or an organization are the most common forms of establishment which you hope will last for a long duration.
You can also establish or create a system for processing sewage water which you hope will be broadly used into the foreseeable future.
You can also establish or create a constitution or a set of rules to base society on and hopefully it will be a constitution which can last a long time.
Whatever you establish or create you frequently need an establishment to promote the creation.
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