(This article is about the 16th-century polity, regarded as the first half of the Toungoo Dynasty.) The First Toungoo Empire (Burmese: တောင်ငူ ခေတ်, [tàʊɴŋù kʰɪʔ]; also known as the First Toungoo Dynasty, the Second Burmese Empire, or simply, the Toungoo Empire) was the dominant power in mainland Southeast Asia in the second half of the 16th century. At its peak, Toungoo "exercised suzerainty from Manipur to the Cambodian marches and from the borders of Arakan to Yunnan", and was "probably the largest empire in the history of Southeast Asia." The "most adventurous and militarily successful" dynasty in Burmese history was also the "shortest-lived."