Why was Confederation a good thing?

It decided to encourage the colonies to join together, because the United States would be less likely to attack Canada if it were a self-governing country rather than separate colonies of Britain.

There were 6 reasons for the confederation which are: 1. Political Deadlock Led To The Great Coalition In The United Provinces Of Canada. 2. A railway linking the colonies was needed to increase trade and to move troops. 3. Cancellation of the Reciprocity Treaty by the United States in 1865 ended the free trade between BNA and the US.