According to Karl Marx, significant social changes are primarily driven by ________, while Gerhard Lenski emphasizes the role of technology in societal evolution.

According to Karl Marx, significant social changes are primarily driven by conflicts between different social classes. He believed that these conflicts arise from the struggle over resources, like wealth and power, which creates tension and ultimately leads to change. For example, when workers feel exploited by their employers, they may unite and demand better wages and conditions, which can lead to social reforms. In contrast, Gerhard Lenski emphasizes technology's role in how societies evolve, suggesting that advancements in tools and methods can change how people live and interact. For instance, the invention of the internet has transformed communication and work, showing how technology can also bring about significant social change.