Which of the following explains why Canadian confederation occurred in 1867?

Question 10 options:

Political deadlocks between English-speaking and French-speaking regions

The American Civil War, which impacted the relationship between British North American and the U.S.

The union would result in greater economies of scale, providing a more powerful economy and greater negotiating power with the U.S.

Britain did not want to have to pay for the cost of defending its colonies, so it encouraged the colonies to join together

All the above are true