Final answer:
The Third generation of e-commerce is defined by its integration with external partners and the facilitation of increased web-based transactions between businesses globally.
Step-by-step explanation:
The generation of e-commerce characterized by increasing integration with external partners over the Web and allowing increased transactions between two web partners is the Third generation. This stage in the evolution of e-commerce includes significant advancements in communications technologies and reflects the effects of globalization. As a result, businesses have expanded their operations beyond local markets, tapping into a global network of suppliers and consumers, thereby intensifying competition and creating a more interconnected economic landscape.