Answer:
The 19th century
Explanation:
The late 19th-century United States is probably best known for the vast expansion of its industrial plant and output. At the heart of these huge increases was the mass production of goods by machines. This process was first introduced and perfected by British textile manufacturers.
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: checks and balances
Explanation: it’s “ a system that allows each branch of a government to amend or veto acts of another branch so as to prevent any one branch from exerting too much power”
In 1803 Robert Livingston and James Monroe were sent to France to negotiate the purchase of the Louisiana Purchase. Originally the two met set out only to purchase New Orleans and the surround territory, however, by the end they eventually purchased the massive track of land that extended beyond the Mississippi River which greatly expanded the size of the United States.
