<span>Grains, as a whole, remain an
important part of the Russian economy. The types of grains produced,
however, vary with changes in demand and environmental conditions. Some
grains, such as oats, supported Russia economically in the past, but
grow in much smaller quantities. While grains export in highest
quantities from Russia, legumes follow close behind. Hardy and resilient
legumes, including potatoes and beets, prove ideally suited for
Russia's cold climates and sub-par soils. Potatoes thrive at Russia's
northernmost locations, primarily regions between 50 and 60 degrees
latitude. Russian potatoes provide citizens with food and nutrients, and
support vodka production as well. </span>
Answer:the Checks and Balances system.
Explanation: the Checks and Balances system.
The correct answer is letter D
A Turning Point is a particular time or incident that marks the beginning of a completely new stage in someone's life or in the development of something.
This turning point is always used to refer to major historical changes, such as the end of certain eras for the beginning of a new era, such as the middle and modern ages, in this turning point there were major changes in society.