He wrote biographies of Mazzini, Garibaldi, Shivaji and Shrikrishna; stayed in America for some time; and was also elected to the Central Assembly. He was

The correct option is Lala Lajpat Rai.

Detailed Explanation:

Lala Lajpat Rai (1865–1928), prominently known as Punjab Kesari (The Lion of Punjab), was a key nationalist leader in India's freedom struggle and one of the famous trio of 'Lal-Bal-Pal'.

Here are the key historical facts matching the given points:

1. Biographies: He was deeply inspired by Italian nationalist movement leaders and Indian historical icons. He wrote biographies of Giuseppe Mazzini, Giuseppe Garibaldi, Chhatrapati Shivaji Maharaj, and Lord Shrikrishna in Urdu.

2. Stay in America: Lala Lajpat Rai traveled to the United States in 1914. During his stay in America, he founded the Indian Home Rule League of America in New York in 1917 to gather international support for Indian independence.

3. Central Legislative Assembly: Upon returning to India, he actively engaged in national politics and was elected to the Central Legislative Assembly in 1926.

Therefore, the political leader described in the question is Lala Lajpat Rai.