The Great Irish Famine brought a large influx of Irish immigrants. Over 200,000 were living in New York by 1860, upwards of a quarter of the city's population. There was also extensive immigration from the German provinces, where revolutions had disrupted societies, and Germans comprised another 25% of New York's population by 1860.
কোন ঘটনাগুলো জার্মানি থেকে লোকেদের অভিবাসন করতে প্ররোচিত করেছিল?
revolutions