Which of these countries has been the WORST contributor to acid rain in Europe (as of the mid-2000s)?

what countries?... i searched it up and the worst one was Europe

Explanation:

i do not know if this question has options, but a main impact of the federal reserve act of 1913, which created the federal reserve bank, was the international use of the u.s. dollar, which soon became the world's leading currency - particularly during world war i, since many nations around the world asked the united states for money.