What led to the increase of immigrants from Ireland to the united statesin the mid-1840's?

The potato blight/the potato famine of the mid 1800s in ireland devestated the country and its people. The potato crops were decimated, and many people died of starvation. This caused mass starvation, as potaos were the manin staple and food source of the irish people. They immigrated to the US in search of a better life and the american dream. There were rumors of more plentiful food and crops in the US, which was a good thing for the farmers and their families. They wanted better loves for their children, and they wouldnt have to depend on the one cash crop of potatos, when they can depend of things like tabacco, indigo, and rice and sugar cane.