How did industrialization weaken old-style conservatism in 19th-century Europe?

Industrialization weakened old-style conservatism in 19th-century Europe by fundamentally altering the social and economic landscape that had traditionally supported conservative interests.1

The process of industrialization strengthened the commerce-minded middle class and fostered the growth of a new industrial working class, both of which often lacked allegiance to the traditional institutions—such as the landed aristocracy—that formed the bedrock of old-style conservatism. As the Industrial Revolution progressed, the rural peasantry, which had been the conservatives' most reliable source of support, declined in numbers relative to these emerging urban groups.1

Furthermore, the rise of rationalist politics, fueled by the Enlightenment and industrial progress, forced conservatives into a defensive position. To remain politically viable in an era of expanding franchise, conservative parties were compelled to move beyond their traditional base and cultivate broader electoral support. This necessity led them to adopt new strategies, most notably identifying with nationalist sentiments and implementing social welfare measures to compete with the growing influence of leftist movements.21