The country of Pakistan was declared independent in 1947 and is a home to four major ethnic groups Baluch, Pathans, Punjabis, and Sindhis. Islamabad is Pakistan's capital city and is a center for business and administration. The climate of Pakistan has three seasons, warm and cool winter from November to March, Hot Summer begins April to July, and the monsoon season from July to September. A Pakistan is mainly an agrarian country despite its arid climate. The major crops grown are Wheat, maize, millets, sugarcane, and tobacco. This country is one of the world's largest producers of raw cotton. Cotton garments and textiles are the country's leading exports. The country is developed in industries in recent years, and the major industries are, cement, cotton, sugar, paper, woolen textiles, fertilizers and Chemicals. Karachi is the biggest port, largest city and the former capital city of Pakistan.