On 21 January the revolutionary government executed Louis XVI after a trial.[15] This united all European governments, including Spain, Naples, and the Netherlands against the Revolution. France declared war against Britain and the Netherlands on 1 February 1793 and soon afterwards against Spain. In the course of the year 1793 the Holy Roman Empire (on 23 March), the kings of Portugal and Naples, and the Grand-Duke of Tuscany declared war against France. Thus the First Coalition was formed.[9]