Two examples would be: great depression and world war 2
You need to upload pictures of the sources so we can see them :)
United Nations (UN) was founded in October 24, 1945 in San Francisco, California, United States. It was established because its goal is to make world have peace and security. They also have the objective to establish human rights
Answer:
Coby Brayan 25,000 con puntos 3.7 promedio
More than 150 years ago, inventors began working on a bright idea that would have a dramatic impact on how we use energy in our homes and offices. This invention changed the way we design buildings, increased the length of the average workday and jumpstarted new businesses. It also led to new energy breakthroughs -- from power plants and electric transmission lines to home appliances and electric motors.
Like all great inventions, the light bulb can’t be credited to one inventor. It was a series of small improvements on the ideas of previous inventors that have led to the light bulbs we use in our homes today.
