Economic Union is not a stage in the evolution of economic integration. It is the final stage of economic integration, where there is free movement of goods, services, labor, and capital, as well as a common currency and a common economic policy.

SAARC was formed in 1985 as a regional cooperation organization among the countries of South Asia. It was the first step towards economic integration in India.

Afghanistan is not a member of SAARC. The member countries of SAARC are India, Pakistan, Bangladesh, Sri Lanka, Nepal, Bhutan, and Maldives.

SAPTA was signed in 1993 as a framework for preferential trading among the SAARC countries.

SAFTA was established in 2006 as a free trade area among the SAARC countries.

Increased competition is not a benefit of economic integration. Economic integration leads to reduced costs, improved efficiency, and increased trade.

The evolution of economic integration in India has been driven by both globalization and regionalism.

Cultural diversity is not a challenge to economic integration in India. The challenges to economic integration in India include differences in economic development, political instability, and lack of infrastructure.

The future of economic integration in India is likely to be shaped by both globalization and regionalism.

Increased inequality is not a potential benefit of economic integration in India. The potential benefits of economic integration in India include increased trade, reduced costs, and improved efficiency.