During the Tang Dynasty, what were travelers required to have?

Abody of water that is surrounded by land on three sides and leads to a larger body of water is called

Which of these innovations led to increased production in american factories in the early 1800s? a. the use of interchangeable parts b. the construction of canals c. the invention of the mechanical reaper d. the availability of electricity

What is the orthodox interpretation of why the cold war started