Life was hard in Poland they had to rent land. That costed a lot of money. So when they grow their crops they had to sell most of it to pay for the rent. Then a bunch of people started coming to Poland and there wasn't enough land to support all the people.
This was caused by a environmental problem.
They lost their land because of the new government. They lost their freedom such as religion and small amount of food. So on July 17,1918 the new government and his family were dead.
This was cause by political reason.
Now I know why the Irish came here , so they could get away from war. There weren't many reason they came here.
This is a Political reason.