B is the answer
Thy couldn’t choose freely nor were they born free
Passage of the Jim crow laws
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 .
Answer:
A new birth of freedom
Explanation:
If we are thinking about <em>slavery,</em> a <em>new birth</em> of <em>freedom</em> would signify the end of slavery.
The others would not make sense, as they are referring to time and various aspects of the physical fighting of the war.
