Potatoes, which are starchy crops from the perennial nightshade Solanum tuberosum, are my favorite comfort food! I like them cooked any style!
Nice, So what's the botanical name called?
I am not sure of the botanical name. I do know that potatoes are a staple all around the world and a major part of the food supply in the world. Do you enjoy potatoes?
Where are they mainly grown?
It is grown around the world and is the world's fourth largest crop only behind rice, wheat and maize. 
Good to know that!  Do they come in different species and colors?
the Americas in the second half of the 16th century by the Spanish. Today they are a staple food in many parts of the world and an integral part of much of the world's food supply. As of 2014, potatoes were the world's fourth-largest food crop after maize (corn), wheat, and rice.
Following millennia of selective breeding, there are now over 1,000 different types of potatoes. Over 99% of presently cultivated potatoes worldwide descended from varieties that originated in the lowlands of south-
German fries
German fries (also referred to as German fried potatoes) is a name for fries or a preparation of fries in which potatoes are sliced into any sizes and shapes, fried or deep-fried, and sometimes prepared with additional cooked ingredients such as onion, green pepper and bacon. By the 1870s, dishes under these names were listed in American and British cookbooks. In German, they are called "Bratkartoffeln" ().
In the United States.
During World War I in the United States