1612th. How Nizhny Novgorod saved Russia

The monument to Kuzma Minin and Prince Dmitry Pozharsky, installed on Red Square in Moscow, is known to everyone. But do we know the biographies of these national heroes well, the historical context in which they acted, the ideas that were inspired?
At the beginning of the 17th century, Russia choked in fratricidal turmoil. The question was about the existence of Russia as a state. The intrigues of the tops and riots of the lower classes, the impostor, foreign intervention, the short rule of Vasily Shuisky, the first and second folk militias, the election to the kingdom of Mikhail Romanov - all this is described in the book on great actual material.
Then Nizhny Novgorod then played a huge role in preserving the sovereignty of the country. The city not only repulsed the troops of the interventionists and usurpators, but also the feat of Kuzma Minin and Dmitry Pozharsky raised the people to protect the country in 1612.
Yes, the whole country saved Russia in the end. But without Lower I could not save