Consider the following statements:

1. Regional imbalance is a major contributory factor for rise of Regionalism

2. The State Reorganization Act, 1956 reorganized the states of India on the basis of language

3. Andhra Pradesh, (1953) was the first state carved out on linguistic basis

4. The regional disparity in India is product of colonial policies and industrial and agricultural policies of post-independence era.

How many of the statements given above  are correct ?