Test and analysis: Among the main targets of the Northern Expedition, the warlord entrenched in the northernmost part is Zhang, known as the "King of Northeast China", with 350,000 troops controlling the three northeastern provinces and the Beijing-Tianjin region, so A was chosen.
Comments: As for the Northern Expedition, students should also know that the departure time is1926; Except Zhang, he and Sun were the targets of the Northern Expedition. The strategic policy of the Northern Expedition is to concentrate forces to destroy the enemy. The vanguard of the Northern Expedition was the Ye Ting Independent Regiment, the Fourth Army of the National Revolutionary Army. The Northern Expedition basically overthrew the rule of the northern warlords.