Answer:
it is depending on what mouthpiece you're talkin about mouthpiece can be for an instrument or something like that a microphone can be used as a little hook to put on your shirt those mini microphones that can be a mouthpiece or mouthpiece that football players can put in their mouth to protect their teeth
The positive effect of the industrial revolution was the new machinery invented including the steam engine, cotton gin, power loom, assembly line, telegraph, and multiple other inventions. This helped create things faster, and helped society do their jobs more efficiently.
The negative effects were the poor working conditions and living conditions. There was extremely low wages, and child labor. Pollution was also increased due to new machinery. Factories polluted the environment.
The depression originated in the United States, after a fall in stock prices that began around September 4, 1929, and became worldwide news with the stock market crash of October 29, 1929 (known as Black Tuesday). Between 1929 and 1932, worldwide GDP fell by an estimated 15%. By comparison, worldwide GDP fell by less than 1% from 2008 to 2009 during the Great Recession. Some economies started to recover by the mid-1930s. However, in many countries, the negative effects of the Great Depression lasted until the beginning of World War II.
Answer:
1989 when the Berlin Wall came down. The Soviet Union dissolved in 1991.
Explanation: This is a world history questions. These two events led to the breakup of the Soviet Union.
