Answer:The Constitutional Convention of 1787 was called to revise the ailing Articles of Confederation. ... Nine states had to approve the Constitution before it could go into effect. After a long and often bitter debate, eleven states ratified the Constitution, which instituted a new form of government for the United States.
Explanation:
I think you forgot to include the options. But to help you, the countries that are part of the heavily industrialized Black Triangle of Eastern Europe are Poland, Germany, and Czech Republic. Thank you for posting your question. I hope this answer helped you.