Which of the fourteen points, by woodrow wilson, introduced the idea of the league of nations?

 POINT #14

Details:

The 14 Points were set forth by US President Woodrow Wilson in a speech he delivered to Congress in January, 1918.  The 14 Points were his proposals for how to end the Great War (World War I) and establish international peace.  An organization such as the League of Nations was the signature idea of US President Woodrow Wilson.  In his 14 Points speech, Point #14 was the establishment of an international peacekeeping association.  He stated it in these terms:  ""A general association of nations must be formed under specific covenants for the purpose of affording mutual guarantees of political independence and territorial integrity to great and small states alike." 

The Treaty of Versailles adopted that idea, and the League of Nations was established in 1920.  [Notably, the United States never joined the League, because the US Senate did not ratify the Treaty of Versailles.]

The League of Nations set out clear goals for what it intended to do. The main aims of the League were disarmament across nations, preventing war through collective security of the international community, settling disputes between countries through negotiation, and improving welfare of people around the globe.  But it proved unable to meet those goals.  The United Nations, formed after World War II, has similar goals, and has been more effective in its efforts -- though there are still plenty of people who criticize the UN's effectiveness.

union blockade

explanation:

the union blockade in the american civil war was a naval strategy by the united states to prevent the confederacy from trading.

the blockade was proclaimed by president abraham lincoln in april 1861, and required the monitoring of 3,500 miles (5,600 km) of atlantic and gulf coastline, including 12 major ports, notably new orleans and mobile. those blockade runners fast enough to evade the union navy could only carry a small fraction of the supplies needed. they were operated largely by british citizens, making use of neutral ports such as havana, nassau and bermuda. the union commissioned around 500 ships, which destroyed or captured about 1,500 blockade runners over the course of the war.