1. The English language helped Nationalist leaders from different linguistic regions to communicate with each other:
The statement is correct. During the Indian nationalist movement, leaders from different linguistic regions in India came together to fight for independence from British colonial rule. One of the factors that facilitated their communication and collaboration was the English language. English became a common language among the educated elite, and it enabled leaders like Mahatma Gandhi, Jawaharlal Nehru, and Subhas Chandra Bose to communicate with each other and coordinate their efforts. English also served as a medium of communication with the British rulers, allowing nationalist leaders to convey their demands and grievances effectively.

2. The introduction of a modern system of education afforded opportunities for assimilation of modern Western ideas:
The statement is correct. The British colonial administration introduced a modern system of education in India, which aimed to produce a class of Indians who would serve as intermediaries between the rulers and the ruled. This modern education system, which included subjects like science, mathematics, literature, and history, exposed Indian students to Western ideas and philosophies. It allowed them to engage with concepts of democracy, nationalism, human rights, and social justice, which were instrumental in shaping their political ideologies and aspirations for independence. Many Indian intellectuals and nationalists, who received this modern education, were inspired by Western thinkers and movements, such as the Enlightenment, liberal democracy, and socialism, and incorporated these ideas into their own political discourse.

3. English educated class provided leadership to the Indian political associations:
The statement is correct. The English-educated class in India played a crucial role in providing leadership to the Indian political associations that emerged during the nationalist movement. These associations, such as the Indian National Congress, All India Muslim League, and various regional political parties, served as platforms for political mobilization and articulation of nationalist demands. English-educated individuals, who had acquired knowledge and skills through their modern education, took up key positions of leadership within these associations. They became the voice of the Indian masses and advocated for political rights, social reforms, and economic development. They used their English language proficiency, education, and exposure to Western political ideologies to articulate the grievances of the Indian people and push for their rights and aspirations.

In conclusion, all three statements are correct. The English language facilitated communication among nationalist leaders, the modern education system introduced by the British provided opportunities for assimilation of Western ideas, and the English-educated class provided leadership to Indian political associations. These factors played significant roles in shaping the Indian nationalist movement and its struggle for independence.