The correct answer is: "He developed mathematical principles"
René Descartes (1596 – 1650) was a French philosopher, mathematician, and scientist who lived more than 20 years in the Dutch Republic and was one of the main figures of the Dutch Golden Age.
His great influence in mathematics has been his major contribution to the Scientific Revolution, although his work in philosophy is outstanding too. He developed the the Cartesian system of coordinates. He is considered the father of analytical geometry, which connects both algebra and geometry and which has been used in the development of infinitesimal analysis and calculus .
The answer is A
The treaty of Paris was signed
Answer: The Conflict of the Orders, also referred to as the Struggle of the Orders, was a political struggle between the Plebeians (commoners) and Patricians (aristocrats) of the ancient Roman Republic lasting from 500 BC to 287 BC, in which the Plebeians sought political equality with the Patricians
Barack Obama was the 44th president.
