We explore how macro and micro networks influence the diffusion of technological innovation and cultural/social behavior. Across the historical regimes in China and Europe, dynastic lordship's macro networks afforded different advantages in technological innovation. A network particular to Europe, the Roman Church, extended deep into local parishes with ethical norms prescribing fairness to strangers, and these cultural foundations helped guilds, trade associations, merchant courts, and universities operate cooperatively far beyond kinship. In contrast, Chinese emperors relied on ancient Confucian moral codes and system-spanning Confucian-educated officialdom; but fiscal limitations compelled officials to defer to local lineage orders, resulting in an enduring cultural pattern of guanxi and a polity whose institutional problem-solving capacity falter beyond the local level. Yet the civil service system has enabled China to outperform similar lineage-dependent regimes. Probing network topologies, we find that system-spanning networks can facilitate technological diffusion, but local networks influence cultural and behavioral change.