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 first tractor that was designed and produced by the Caterpillar Tractor Co. that was not based on a previous Holt or Best model was its Model Twenty, which went into production at San Leandro in 1927. Production of the Twenty was started at East Peoria, Illinois, in 1928.aterpillar replaced the concept of a pipelayer attachment on a crawler tractor with the industry's first integrated pipelayer machine, the No. 583 Pipelayer in 1955. The following table shows Caterpillar's pipelayers from 1955 to about 1960.