What is the common type system (CTS)?

.Net framework supports multiple languages, and different language defines their primitives’ data types in different formats. For examples:
C# defines and integer variable : int i;
Where as VB.Net defines an integer variable: Dim i as integer
Microsoft tries to convert these data types into a generic data types. So that different codes written in different languages code are converted into language independent code, due to this CTS is created.
CTS contain different data type’s specification to be used in our code. For example: the primitives’ integer data type is known as Int32, in CTS. All data types are derived from object data types from which the value types and reference types are defined.