What problems did humayun face when ascended the throne ?

. the name Humayun means lucky but in reality his life was full of problems. as a ruler he faced lots of disturbances.
. he faced a tough struggle against Sher Shah Suri of Bihar and Bahadur Shah of Gujarat.
. the Afghan king Sher Shah Suri annexed his empire. Sher Shah Suri drove out Humayun out of his kingdom.           Humayun became a refugee and escaped to Persia.
                                                                      
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