The earliest introduction of zebra mussels in united states probably occurs in 1986.
At that time, commercial vessels from Europe went to north America as a place for freshwater ballast stowaway. They merchants then introduced zebra mussels to the market and it gained popularity ever since. They also introduced zebra mussels population in local lakes and let them reproduce there.
If they don't copyright anything they should be fine just make sure you give credit to your sources
I think the best word for it is "junta".
This word comes from Spanish for juntar (bring together). In English, it is used to mean a military group of people ruling a country as a dictatorship.
