George Walker Bush, an American politician, was the 43rd President of the United States, in office from 2001 to 2009. Prior to his presidency, he served as Governor of Texas from 1995 to 2000. His term was profoundly marked by the September 11, 2001 attacks. In response, he launched the "War on Terror," which led to the invasions of Afghanistan and Iraq, and established the Department of Homeland Security. His key domestic policy achievements include the No Child Left Behind education act, significant tax cuts, and PEPFAR, a major global program to combat AIDS in Africa, considered one of his greatest humanitarian successes. His presidency also faced the 2008 financial crisis. After leaving the White House, he founded the George W. Bush Presidential Center, dedicating himself to philanthropic activities. For his work, he has received numerous national and international honors.