All of the trees in an area are cut down. which of the following has occurred?
a.
overfarming
b.
overgrazing
c.
deforestation
d.
slash and burn farming

I think it's C

Explanation: because it says all the trees are cut down and it doesn't say anything related to farming, so other options don't make sense

the doctrine of nullification recommended that states living inside the union have the one-sided, inalienable ideal to void any law made by the national government that could be esteemed illegal.

the united states was shaped based on a general agreement among its individual states. hence, it is inferred that under the hypothesis of invalidation, since the states are the establishment of the union, they have the ability to referee and disprove unlawful laws.

i think it was   tsar alexander ii