It is "the opportunity to expand their knowledge and learn skills."
The correct answer is Canada.
Canada was the country which had an annual labor festival before the United States. Labor Day in Canada started around 1870 in Toronto, and then years later, Peter McGuire brought the national holiday to America as well to celebrate the contributions of workers.
"form a more perfect union" Create a nation where states work together. ...
"establish justice" Make laws and courts that are fair. ...
"Ensure domestic tranquility" ...
"Provide for the common defense" ...
"Promote the general welfare" ...
"Secure the blessings of liberty"
