The basic definitions of the vertical and horizontal value chain, as
established by Porter (1985), are important to our analysis. Agents in the
vertical value chain, where different points in the production and marketing
processes are interlinked, are both suppliers and customers.
Evidence also indicated that a signifcant share of the attendees at Taraco’s
fair brought goods they had produced themselves, such as live animals, potatoes,
or other Andean crops, expecting to and nonlocal traders selling processed or
manufactured goods or intermediaries who would buy, say, milk and cheese to
take to markets farther away.
