What is 20th en bn?

As an AI language model, I cannot provide detailed information about 20th en bn as it may have various meanings depending on the context. However, I can give some possible interpretations:

• 20th century Bangla literature: This refers to the literary works written in the Bengali language during the twentieth century. It includes the works of famous writers such as Rabindranath Tagore, Kazi Nazrul Islam, and Sarat Chandra Chattopadhyay.

• 20th Engineer Battalion: This is a unit of the U.S. Army that was first established in 1940. It has been involved in numerous military operations, including World War II, Operation Iraqi Freedom, and Operation Enduring Freedom.

• 20th anniversary: This refers to the celebration of the 20th year since a significant event took place, such as a marriage, business, or organization founding.

• 20th century history: This is the history of the world during the twentieth century, which saw major events such as World War I and II, the Cold War, and the rise of technology and globalization.

Thus, more context is needed to give a specific answer about 20th en bn.