The Treaty of Saragossa did not modify or clarify the line of demarcation in the Treaty of Tordesillas, nor did it validate Spain's claim to equal hemispheres (180Â° each), so the two lines divided the Earth into unequal hemispheres. Portugal's portion was roughly 191Â° whereas Spain's portion was roughly 169Â°.
Transcript of The Hair Straightener: Past and Present. The Hair Straightener: Past and Present By Josephine and TaMuriel The hair straightening model that we use today was invented in 1912 by Lady Jennifer Bell Schofield, although a tool for shaping hair, called a pressing comb, was invented in 1872.
[ The history of hair straightener](http://www.ehow.com/about_5449802_history-hair-straighteners.html)Isaac K. Shero invented a hair straightener that comprises two flat irons that are heated and pressed together. He patented it in 1909. History of the flat iron. history of the flat iron It wasnât until later on in 1912 that the model of flat iron came out that most closely represents the flat irons that you see being sold on the internet and in stores today.