The American Revolution was a time when the British colonists in America rebelled against the rule of Great Britain. There were many battles fought and the colonies gained their freedom and became the independent country of the United States. The American Revolutionary War lasted from 1775 until 1783.
A. A system of writing. The inca communicated with a series of knots tied in ropes.
The Tang Materia Medica was the first <em>pharmaceutical</em> book.
Materia Medica is the Latin term for collected knowledge about healing substances. The Tang Materia medica was written circa 659 CE and it is one of many contributions by the Tang dynasty to science. The book, published by the then ruling Chinese government, is a compilation of drugs and instructions for their use. The book has 54 volumes, divided into 3 parts:
- The Main body (20 volumes) and Table of contents (1 volume).
- Pictures of medicines (25 volumes) and Table of contents (1 volume).
- Illustrated description (7 volumes).
After it was published and distributed throughout the country by the Tang government, it became the national basis for the medical practice for more than 400 years.
