Answer
After overthrowing the Zveno government, Boris III installed Georgi Kyoseivanov as Prime minister. Kyoseivanov was a staunch supporter of the monarchy and had previously served as Prime minister under Boris III's father, Ferdinand I. Kyoseivanov's government was marked by a return to the authoritarian policies of the pre-Zveno period, and he was instrumental in suppressing the opposition and consolidating Boris III's power.