The treaty prevented the war because <span>The treaty moved the Line of Demarcation 800 miles further west. This gave Portugal more opportunity to claim lands unexplored by other Europeans.
While the portugals were exploring those land, the spain could obtain the resource from the conflicted territories without having to face the threat of the Portuguese's army.</span>
First event leading to US's enter into WWI:<span>Sinking of the Lusitania.
May 7, 1915.
American gov said stop unrestricted warfare.
Germans said okay.
</span>Second event leading to US's enter to WWI:<span>Germany publicly announces using unrestricted sub warfare again.
January 1917.
America gives second warning.
Germany ignores warning.
</span>Third event leading US's enter into WWI:<span>Zimmerman.
Telegram sent to mexico by germany.
Intercepted and decoded by great britain.
translation given to US in Feb. 1917
America begins to mobilize for war.
</span>Fourth event leading to US's entrance in WWI:<span>April 1917.
German U-boats sink four US merchant ships.
America enters the war April 6 1917.</span>
The astrolabe and the caravel <span />
