Which countries began to lag behind in their development at the beginning of the twentieth century?

At the beginning of the 20th century, Russia began to lag behind Europe. The reason for this was that all previous reforms were aimed at ensuring a good standard of living for the upper class. The common population found itself in difficult conditions, did not have the opportunity to grow a large amount of crops, to establish their own production and trade. This, in turn, led to the impossibility of accumulating capital and developing the country’s economy. Society has slowly adapted to the changes taking place in the world.