Why does Thomas Paine believe America is safe from invaders?

Thomas Paine argues that America is safe from invaders primarily due to its geographical advantages, such as its vast oceans that provide natural barriers against foreign attacks. He believes that the distance from Europe, along with the difficulty of launching a successful invasion across such a large expanse of water, makes it improbable for any significant threat to arise. Additionally, Paine emphasizes the strength and resilience of the American people, who are united in their desire for liberty and independence, further deterring potential aggressors.