this is going to be more then one but then you can choose. Biology is one astronomy is another and then there is economics and nuclear physics and the last two are chemistry and mathematics. i hope this answers your question.
The ratification of the 13th Amendment to the US Constitution (freedome of slaves), and the Civil Rights Act of 1964
Civil War buttons are a popular collector's piece and are usually remnants of original Union or Confederate uniforms. Since these were spun from wool, buttons are the only thing left.
Probably rivers, since one of them is named, "the army of the Potomac."
The last recognized major engagement of the Civil War was the Battle of Columbus, near Columbus, Georgia. However, the last engagement between Union and Confederate forces took place at the Battle of Palmito Ranch, in Texas. However, since this battle took place after Robert E. Lee's formal surrender at Appomattox, most historians cite the Battle of Columbus as the last land battle of the Civil War.
The Civil War occurred AFTER the American Revolution, so those thirteen "original" colonies had long since become STATES. At the time the Civil War broke out in 1861, there were 33 states, of which 18 were "free" states and 15 were "slave" states.
Firstly, since which civil war? Secondly, scientists have made millions of contributions since most of them. They include huge advances in astronomy, nuclear physics (almost anything involving it, in fact), chemistry (the isolation and study of many compounds, identification of chemical structures, new elements discovered or created), biology (medicine in particular), economics (so much more advanced), mathematics.. virtually anything you can think has been largely contributed to since then.
Since glass was invented, the scientists were able to create the microscope. If this was never invented, the scientists would never have been able to discover cells.
Since glass was invented, the scientists were able to create the microscope. If this was never invented, the scientists would never have been able to discover cells.
Parks,schools,and streets have commemorated Banneker since the years he lived
The Phone Bill of 1969
Aristotle did not make direct contributions to cell theory since this concept was developed much later in the 17th century. However, his ideas on biology and classification laid the foundation for the study of living organisms, including cells. His observations and writings on plant and animal structures influenced later scientists who contributed to the development of cell theory.
Hypothalamus
Since the Chinese teach Communism there are no positive contributions.
No, electricity was not invented by a Black person. Electricity as a concept has been around since ancient times, with contributions from various scientists and inventors throughout history. The modern understanding and harnessing of electricity can be attributed to multiple inventors and scientists.
Richard A. Proctor did not discover the Ursa Major constellation; it has been known since ancient times. Proctor was an English astronomer who made contributions to popularizing astronomy and writing about celestial objects and phenomena.
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The Duke of URL's contributions are not counted, mostly because it is a robot. It makes so many contributions per minute, it would be useless to count, since it never stops.