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 .
Immigrants supported political machines because they provided jobs and services
1921 belongs to time where the juridical base was formed as a result to demands of the growing economic environment
Are there any answers? Basically, power shifted back to the National Convention; the monarchy moved in to resume it's power. -Hope this helps!
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