Answer:
1. Teschen (1919)
Its main importance was that it had valuable coal mines there which both the Poles and the Czechs wanted. As both were newly created nations, both wanted to make their respective economies as strong as possible and the acquisition of rich coal mines would certainly help in this respect.
2. Treaty of Versailles
The final Covenant of the League of Nations was drafted by a special commission, and the League was established by Part I of the Treaty of Versailles. On 28 June 1919, 44 states signed the Covenant, including 31 states which had taken part in the war on the side of the Triple Entente or joined it during the conflict.
3. The League's goals included disarmament, preventing war through collective security, settling disputes between countries through negotiation diplomacy and improving global welfare.
4. What happened when Wilson went back to America? The senate refused to join the league and didn't want to get involved in Europe's affairs, the US liked isolationism. ... They believed in isolationism and didn't want to get involved in Europe's affairs. Many Americans thought the Treaty of Versailles was unfair.
5. Although the League of Nations was much of the work of President Woodrow Wilson America never joined the League of Nations. This was for several reasons, firstly America had suffered casualties in the war, and many people in the USA wanted to keep America out of European affairs. This policy was called isolationism.
Sorry can't answer all of them. Gotta go! Chow!