1. the steel strike of 1919
2. seattle general strike
3. the great strike of 1919
It's B. The Columbian Exchange is just that, the exchange of goods, plants, people, etc. between Europe and the Americas
To establish security and stability for the nations of EuropeWhat was the main goal of the participants in the Congress of Vienna?
I would go with the last option.
Explanation:

We need government because of following ways
- if the government is not there dictatorship is easily establish in our country.
- if government is not there , the rules are not followed by peoples
- if government is not there ,there is no one who work for the development of the country
- If government is not there criminal activities increased in countries and no one is there to handle . . The country filled with choas