A is the answer to your question.
Crimean War, weakened the economy of the Ottoman Empire
Answer:
The Northwest Ordinance, adopted July 13, 1787, by the Confederation Congress, chartered a government for the Northwest Territory, provided a method for admitting new states to the Union from the territory, and listed a bill of rights guaranteed in the territory
Explanation:
The European Union can be regarded as political and economic union which consists of 27 member states , and the base is situated primarily in Europe
It serve as trade agreement which unites all European countries having single trading goal. Credits: ayfat23
I think that it could be the last one