Spain: Spanish officials closed off the lower Mississippi to U.S. shipping.
Great Britain: They forced American merchants to pay high tariff.
The effect is “not for their class” and also the cause is “appointed people for there abilities”
Answer:
Molotov cocktail
Explanation:
It's also known as petrol bomb, bottle bomb or poor man's grenade, among other names.
It was invented in the late 1930s.
Its name doesn't come from the inventor or from a drink's name. It was named that way Finns as an insult to a Russian minister (Vyacheslav Molotov) who was not really liked by the Finns.
It's been used then for almost a century mostly by protesters, but also during war times.