Answer: the Americas
The Monroe Doctrine (1823) was a United States policy that warned European states not to interfere with the Americas. It opposed colonialism, and claimed that any intent to interfere would be consider a sign of hostility towards the United States. However, it recognized existing European colonies and promised not to interfere with the internal affairs of European countries.
For it's unlawful seizure of US ships and sailors, Britains interventions and the Indian warfare.
Answer:
Most definitely slowed down the pace of the war tremendously.
Explanation:
The nature of trench warfare made it almost impossible for either army to overtake the other. Attacking infantry was slowed down by the barbed wire and bombed-out terrain of No Man's Land, making the element of surprise unlikely. Later in the war, the Allies did succeed in breaking through German lines using the newly-invented tank.
The 19th amendment gave women the right to vote in US elections. This law was passed in 1920.
Flappers were women during the 1920's who abandon tradition. Before this time, women were expected to wear long dresses similar to the ones worn in the Victorian era in Europe. Instead, flappers were dresses that were shorter (usually showed their ankles or knees). Along with this, flappers loved to listen to music, got short hair cuts (also called a bob cut), and partied in speakeasies.
During the 1920's, jazz exploded onto the scene thanks to the Harlem Renaissance. Thanks to musicians like Louis Armstrong and Duke Ellington, jazz music became one of the most popular types of music in the United States. This jazz music was played in several different venues. This include speakeasies and clubs devoted to jazz like the famous "Cotton Club."