R.J. Rushdoony redefines the so-called “Dark Ages” as the “Frontier Age,” a vibrant era of Christian pioneering that laid the foundation for Western civilization. Far from being a time of regression, it was marked by cultural rebuilding, the spread of Biblical law, and decentralized governance. Jewish traders and especially Christian monks—most notably the Irish—restored education, commerce, and moral order across post-Roman Europe. Rushdoony urges modern believers to see themselves as pioneers once again, called to rebuild a collapsing world not by nostalgia or racial myths, but through faithful obedience and bold Christian reconstruction.