Merchants and financiers during the Renaissance were key players in the economic transformation of Europe, focusing on trade, banking, and finance. Their activities facilitated the growth of cities and economies, supporting the rise of new monarchies as they provided the financial resources necessary for state-building and expansion. The wealth generated by merchants and financiers allowed monarchs to consolidate power, invest in military endeavors, and foster cultural advancements, making them crucial to the political landscape from 1450 to 1648.