No records are available about the exact boundaries of original kingdom established by Gopala, but it might have included almost all of the Bengal region. The Pala empire extended substantially under Dharmapala's rule. Apart from Bengal, he directly ruled the present-day Bihar. The kingdom of Kannauj (present-day Uttar Pradesh) was a Pala dependency at times, ruled by his nominee Chakrayudha. While installing his nominee on the Kannauj throne, Dharmapala organised an imperial court. According to the Khalimpur copper plate issued by Dharmapala, this court was attended by the rulers of Bhoja (possibly Vidarbha), Matsya (Jaipur region), Madra (East Punjab), Kuru (Delhi region), Yadu (possibly Mathura, Dwarka or Simhapura in the Punjab), Yavana, Avanti, Gandhara and Kira (Kangra Valley). These kings accepted the installation of Chakrayudha on the Kannauj throne, while "bowing down respectfully with their diadems trembling". This indicates that his position as a sovereign was accepted by most rulers, although this was a loose arrangement unlike the empire of the Mauryas or the Guptas. The other rulers acknowledged the military and political supremacy of Dharmapala, but maintained their own territories. The poet Soddhala of Gujarat calls Dharmapala an "Uttarapathasvamin" ("Lord of the North") for his suzerainty over North India.