Which of these statements best describes Bulgaria's economy?
A) The economy has improved because of a government reform program.
B) The economy has improved slightly over the past 10 years.
C) The economy has remained the same over the past 10 years.
D) The economy has fallen substantially over the past 10 years.

i think its either b or c

explanation:

answer; ///i believe that the correct answer is (a) the great depression

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.

one of the main reasons was definitely slavery. back in 1861, republican abraham lincoln was elected and ended up being a major influence in the slavery business. slavery greatly affected the texas economy because back in 1845 during the annexation of texas, slaves became a big part of the texas population. many texans that were in favor of the secession influenced groups through party ties.