Albert Einstein's General Relativity Theory provided an explanation for Newton's Universal Gravitation Law that defines how two Masses attract each other, by stating that the distortion of the interwoven Space/Time entity caused by Mass dictates to all other Masses how to move and as such causes the attraction between Masses. However, Coulomb's Law, that defines the attraction/repulsion between two Electric Charges, has an identical structure to the structure of Newton's Universal Gravitation Law. Thus, it is reasonable to wonder, what causes the attraction/repulsion between Electric Charges. This study presents a new model of Space, which suggests an answer to that question. That model expands Einstein's General Relativity Theory by describing Space as being composed of three interwoven Space/Time entities: a Mass Space/Time entity for Masses, a Positive Electric Charge Space/Time entity for Positive Electric Charges and a Negative Electric Charge Space/Time entity for Negative Electric Charges. That model also assumes that Masses affect the Mass Space/Time entity, and is affected by this entity, according to what the General Relativity Theory claims. In addition, that model describes how Electric Charges affect the additional Space/Time entities, the two Electric Charges Space/Time entities, and are affected by these entities, such that the Coulomb's Law is explained, analogous to the explanation of the Universal Gravitation Law by the General Relativity Theory. This article expands the General Relativity Theory to relate also to Electric Charges. As such, it predicts that the acceleration between two Charged Objects is a function of the Electric Charges magnitude and not a function of the Masses of the Charged Objects. This article also provides a proposal how to check that prediction, and if this prediction turns to be successful it will provide validity to the theory presented in this article.