The Rise and Fall of Venice's Inclusive Institutions

Key Insight

Venice, situated at the far north of the Adriatic Sea, became possibly the richest place globally during the Middle Ages, building its prosperity on advanced inclusive economic institutions. Gaining independence in 810 AD, it leveraged its central Mediterranean location to benefit from expanding trade routes, importing spices, Byzantine goods, and slaves. By 1050, Venice's population was 45,000, increasing to 70,000 by 1200, and further to 110,000 by 1330, a size comparable to Paris and three times that of London, indicating remarkable economic growth.

A key innovation supporting Venice's expansion was the commenda, a rudimentary joint-stock company formed for single trading missions. It involved a 'sedentary' partner providing capital (typically the majority) and a 'traveling' partner accompanying the cargo, enabling young entrepreneurs without wealth to enter trade and fostering upward social mobility. Profits were shared based on contract type: unilateral commendas gave the sedentary merchant 75 percent of profits for 100 percent of capital, while bilateral ones provided 50 percent of profits for 67 percent of capital. Government documents from 960, 971, and 982 show a high percentage of new names among the elite (69 percent, 81 percent, and 65 percent respectively), demonstrating the commenda's role in creating new wealth and driving political inclusiveness, such as the establishment of the Great Council and a more constrained doge after 1171.

Venice's inclusive trajectory was reversed by the 'Serrata' or 'Closure,' a deliberate move by established elites to protect their power from creative destruction. After debates in 1286, rules for Great Council membership changed: by February 1297, automatic nomination was granted to those who had served in the previous four years, and by September 1298, current members and their families no longer needed confirmation. This effectively sealed the council, creating a hereditary aristocracy formalized by the 1315 'Libro d’Oro.' This political closure was followed by an economic Serrata, banning commenda contracts and nationalizing trade from 1314. The state organized trading galleys and imposed high taxes on individual traders from 1324, making long-distance trade the preserve of the nobility. This shift to extractive institutions led to economic decline, with Venice's population shrinking to 100,000 by 1500 and continuing to contract, turning it into a tourist destination rather than an economic powerhouse.