 These economic developments among the rice merchants were intricately connected to parallel developments in other trades, and the formation of a number of networks of different types of guilds including "kabunakama", "rakuichi" and "rakuza", which developed out of the older guild types known as "tonya" and "za".In the first years of the 1730s, as the result of poor harvests and trade issues, the price of rice plummeted.Though this looked good for buyers on the face of it, this wreaked havoc with an economy which was still based largely on rice as a medium of exchange.