The last general levy of the nobility was declared in 1809, but Napoleon easily defeated the noble troops near Győr. Agricultural bloom encouraged the landowners to borrow money and to buy new estates or to establish mills during the war, but most of them went bankrupt after peace was restored in 1814. The concept of "aviticitas" prevented both the creditors from collecting their money and the debtors from selling their estates. Radical nobles played a crucial role in the reform movements of the early 19th century. Gergely Berzeviczy attributed the backwardness of the local economy to the peasants' serfdom already around 1800. Ferenc Kazinczy and János Batsányi initiated language reform, fearing the disappearance of the Hungarian language. The poet Sándor Petőfi, who was a commoner, ridiculed the conservative noblemen in his poem "The Magyar Noble", contrasting their anachronistic pride and their idle way of life.