I believe the answer is: d. the shell and the skeleton
The shell and skeleton in architecture would act as the main foundation that support the weight of the whole building. The strength of shell skeleton would determine whether the building would collapse during natural disaster such as earthquakes.
B. Cooperative federalism has been practiced in the US since 1860.
Cooperative federalism, or the concept of federalism in which local, state, and federal governments work together to create policies, replaced dual federalism in the 1930s.
The national government has the power to control the nations budget and spending. They are in charge of defending the nation. They also handle many foreign affairs.
i believe the answer would be a, very little of canada's population lives there
