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.
Wish I knew history so I can help you
Answer:
The Virginia House of Burgesses was the first democratically-elected legislative body in British North America. This group of representatives met from 1619 until 1776. ... The House of Burgesses is important because the ideas and leaders from this House helped bring about the American Revolutionary War.
