Galen's area of expertise were in pharmacology, surgery and anatomy. He was also known by the name of "father of experimental physiology". He was not only a biologist but also a physician. He was born in 129 AD and died on 219 AD. He was very famous for making the first experimental medicine.
Answer:
a. To promote strong economic ties through even trading relationships
Explanation:
John Ross was the chief of the Cherokee Nation between 1828 to 1866. He was the responsible for using diplomacy and legal arguments to protect the tribe’s interests. While he was chief the Cherokee wrote a Constitution, constructed schools and courthouses and defended a strong Cherokee nation that could coexist with white settlers without loosing it's culture and habits.