Original: On 11 March 1938, faced with a German invasion aimed at preventing a plebiscite of independence, Schuschnigg resigned as Austrian Chancellor and Seyss-Inquart was reluctantly appointed to the position by Austrian President Wilhelm Miklas.
Simplified: On March 11 1938 Schuschnigg resigned as Austrian Chancellor and Seyß-Inquart was appointed to the position by Austrian President Wilhelm Miklas.