Bago Region (Burmese: ပဲခူးတိုင်းဒေသကြီး, pronounced: [bəɡó táɪɴ dèθa̰ dʑí]; formerly Pegu Division and Bago Division) is an administrative region of Burma, located in the southern central part of the country. It is bordered by Magway Region and Mandalay Region to the north; Kayin State, Mon State and the Gulf of Martaban to the east; Yangon Region to the south and Ayeyarwady Region and Rakhine State to the west. It is located between 46°45'N and 19°20'N and 94°35'E and 97°10'E.

According to legend, two Mon princes from Thaton founded the city of Bago in 573 AD. They saw a female goose standing on the back of a male goose on an island in a huge lake. Believing this was an auspicious omen, the princes built a city called Hanthawady (Pali: Hamsavati) on the edge of the lake.

The earliest mention of this city in history is by the Arab geographer Ibn Khudadhbin around 850 AD. At the time, the Mon capital had shifted to Thanton. The Bamar from Bagan ruled the area in 1056. After the collapse of Bagan to the Mongols in 1287, the Mon regained their independence.

Thein Sein (Burmese: သိန်းစိန် [θéɪɴ zèɪɴ]; born 20 April 1945) is a Burmese politician and former military figure who has been president of Burma (Myanmar) since March 2011. Previously, he was Prime Minister from 2007 until 2011. He is generally considered to be a moderate and reformist in the new government.

Thein Sein was born in Kyonku, British Burma (now Myanmar), a small village in what is now Ngapudaw Township in the Irrawaddy delta to parents Maung Phyo (father) and Khin Nyunt (mother). He was the youngest of three children. His parents were landless, and his father made a living carrying cargo at the river jetty and weaving bamboo mats.

Thein Sein graduated from the 9th intake of the Defense Services Academy in 1968.

Throughout Thein Sein's four-decade-long military career, he was considered a bureaucrat, not a combat soldier. In 1988, he served as a major for Sagaing Division's 55th Light Infantry Division and later served as a commander for Sagaing Division's 89th Infantry Battalion in Kalay Township. The following year, he studied at the Command and General Staff College in Kalaw, Shan State.