Answer:
Researchers finally isolated the virus that causes flu from pigs in 1931, and from humans in 1933.
Explanation:
hope all of yall are staying safe! Luv y'all! :3
How did industrialization cause the united states to become more involved in world affairs?
The labor movement in the United States grew out of the need to protect the common interest of workers. For those in the industrial sector, organized labor unions fought for better wages, reasonable hours and safer working conditions. ... In the 19th century, trade unionism was mainly a movement of skilled workers.
Answer:
The first Labor Day holiday was celebrated on Tuesday, September 5, 1882, in New York City, in accordance with the plans of the Central Labor Union. The Central Labor Union held its second Labor Day holiday just a year later, on September 5, 1883.
