Johannes Gutenburg is the person you are looking for.
Yes, there were five states that joined the Union in war, but I do not think they were ten years apart.
In World History, a declaration of independence does exactly that: declare a country's independence from a mother country. For example, the United States declared independence from England, and Comoros declared independence from France.
The supply of coal was crucial to the industrial revolution because coal was cheap and affordable and also it was an excellent source of energy. Coal was the best energy source at the time of the industrial revolution and would allow for machines to be coal powered.
The western allies lost the cezchoslovakia from witch the Greman armies couldn't be out flanked