The British were the first people to establish a stronghold in the Oregon Country and also engage in the extensive fur trade in the region. So, when the Americans settled in the Eastern area near the Mississippi, their main aim was to have a pacific coast border.
When Thomas Jefferson ordered Lewis and Clark to engage in the expedition, the aim was to find a route through the pacific ocean. Also, given that Amerca did not have a harbor, they longed to acquire the Puget Sound to serve as deep-harbor water for their ships.
Paul's mother is all about appearances. She likes the big house with the perfect lawn. Paul is not interested in superficial appearances. Paul is loyal to the people he likes. they are both overprotective people.