What two things prevented general Joseph hooker's plan to defeat lee's army?

General Joseph Hooker's plan to defeat Robert E. Lee's army was thwarted primarily by poor intelligence and unexpected Confederate maneuvers. Hooker underestimated Lee's ability to reposition his forces quickly, allowing Lee to divide his troops and attack Hooker's flanks. Additionally, Hooker's hesitance and lack of decisive leadership during critical moments contributed to the plan's failure, ultimately leading to a Confederate victory at the Battle of Chancellorsville.