The presence of north-to-south flowing rivers in the US affected its development by creating a economic bond between the North and the South, which some believe stemmed the onset of the Civil War until the creation of the railroad. Take Chicago, for example. Chicago existed as an agricultural hub where farm goods from the Midwest would go before making their way to larger markets. Before the Civil War, those goods traveled South down the Ohio and Mississippi Rivers and then were sold at New Orleans. This led the Western half of the US to look warily at Civil War because it would directly impact their ability to conduct trade. However, in the 1850s and 60s, Northern manufacturers began building railroads from Northern cities to Chicago, which artificially redirected the flow of farm goods to the East. Now, free from fearing an end of trade, Western politicians were more likely to approve of the Civil War.
Important progress was made, such as full development of the decimal place-value system to include decimal fractions, the first systematized study of algebra, and advances in geometry and trigonometry. Arabic works played an important role in the transmission of mathematics to Europe during the 10th to 12th centuries.
Sure hope this helps you :)
Hes best known for serving as the president of the confederacy from 1861 to 1865
Research by some scholars provides population estimates of the pre-contact Americas to be as high as 112 million in 1492, while others estimate the population to have been as low as eight million. In any case, the native population declined to less than six million by 1650.
I believe there is a book on the matter as well. Good luck. :)
I believe, keep in mind, believe, he disliked how inconvenient it was and how it wasn't locally set
