For the most part, they wanted an opportunity to own their own land. European land was largely owned by rich Lords and Monarchs. The US was largely open for the taking, and the poor would agree to be an indentured servant for many years in exchange for a chance to make it to the US, and hopefully one day own their own land.
I think Athens was more wealthy
Reconstruction was designed to rebuild southern states after the Civil war through physical,social,economic and political changes and aid.
Explanation
Reconstruction was the plan Abraham Lincoln and it was meant to integrate the southern states into the union. After the Civil war between the south and north,South was completely destroyed.
The economy of the south was completely dependent on agriculture and reconstruction intended to bring economic reforms to make south not so agriculture dependent and several changes in infrastructure were to be made.