By 1852, Sutter's New Helvetia had collapsed completely, and Sutter's Fort had been abandoned. Sacramento's commerce had become reliant on coins, and the city had outgrown its unstable Gold Rush boomtown status and established itself as a fully fledged community; The Embarcadero, which had driven the growth of Sacramento from the start, no longer solely determined if the city would survive or be abandoned. The year 1852 saw a diversification in the Sacramentan economy; pharmacies, attorney firms, brass foundries, and lingerie shops, among others, lined the streets of the city during this era. Additionally, companies were beginning to take advantage of the fish populations in the American and Sacramento Rivers, a resource that Sutter had discovered and utilized during the era of New Helvetia. The Central Valley's capacity for agriculture was also noted, and wheat surpluses that had originated in the Sacramento area were often shipped en route to foreign countries. However, the city caught afire the night of November 2, 1852; nearly 85% of the city was destroyed in the fire. Sacramentans rebuilt the city with brick, rather than the fire-hazardous wood that was the medium for buildings in that era. A second fire in 1854 destroyed twelve newly reconstructed downtown city blocks, including the city courthouse.