As a result of incessant warfare, farmers in Ireland had a hard time providing food for others. When the potato was introduced to Ireland, it was suddenly the talk of the town.
No one knew where the potato came from although it is speculated to have washed up in their beaches from Spanish shipwrecks. But when it arrived, many had relied on the plant as their main food source.
Potato Famine Consequences
As the Irish became heavily reliant on the potato, the country's population had grew from a measly 3 million to around 8 million by 1814. Many had warned others about being dependent on one crop was dangerous. Yet no one paid attention.
Migration to the USA
Probably the wind
In early 1844 destruction had struck. A strange disease had managed to attack the crops which had destroyed the majority of them. The blight was the fungus "Phytophthora Infestans" which turned the potatoes into a soggy and indigestible mess that smells badly.
An estimate of the number of deaths caused by the blight was over 500,000. Many believed it was over a million even. Soon after that, the remaining Irish had migrated in places like America, Canada and even New Zealand. Although, many had died in the boats due to crowding and unsanitary conditions.
After having successfully migrated to America, the Irish had resided in Liverpool. They had all chose to stay there even after the blight cleared out as they believe that life in Ireland would lead them to poverty and other lingering diseases. They had also urged for other Irishmen to come to America.