#1- Most post-colonial settlers sought out similar land / climate to their former homes... you see the Portuguese fishermen settle on the coasts so they can continue fishing... Germans often sought out rich farmland.
#2 The major goal was to link Lake Erie and the other great lakes with the Atlantic coast through a canal
#3 It was like a minor gold strike for farmers, manufaturers and the transportation
#4 They wanted to expand their knowledge in canal building and take the practices of the British canal system to mind