Lönnroth took the history subject to a new level in Sweden, he further developed and refined the hypercritical theory of history that his mentor, Curt Weibull, had introduced.
Lönnroth took the history subject to a new level in Sweden, he further developed. His mentor had introduced. Lönnroth took the history subject to a new level in Sweden, he further refined the hypercritical theory of history this. Curt Weibull was his mentor.