How were the lines of demarcation and the treaty of tordesillas related

Map showing the line of demarcation between Spanish and Portuguese territory, as first defined by Pope Alexander VI (1493) and later revised by the Treaty of Tordesillas (1494). ... Spain won control of lands discovered west of the line, while Portugal gained rights to new lands to the east.

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a primary sousrce was there already born and a secondary sousce is when a soil that has been use is being use again that a secondary

during the 20th century, the role of the vice president has evolved into more of an executive branch position. now, the vice president is usually seen as an integral part of a president's administration and presides over the senate only on ceremonial occasions or when a tie-breaking vote may be needed.