How have the economies of canada and the united states changed as technology has developed?

The economies of the United States and Canada have had a very similar development over their recent history.

Both started by being places where the agriculture and fur trade were the basis of the economy, so they were in general engaged into the primary economic sector.

Once the industrialization was introduced, the countries very quickly switched to the secondary economic sector by becoming heavily industrialized and instead of selling raw materials and products, they were manufacturing them.

As they were becoming more developed and wealthier, they had a big advantage over most of the countries in the world, so they were able to start to engage in the tertiary and quaternary economic sectors, which have became the leading economic sectors in the modern times.  

its i think c because its the lowering cloud