Which of the following was not a harmful farming practice that contributed to the severe damage of great plains farmland
during the dust bowl era?
a farmers encouraged wheat crop production and aggressively discouraged native plant growth
b. farmers failed to use fertilizers to encourage crop production
c. farmers avoided the practice of rotating crops to diversify soil nutrients.
d. farmers did not construct natural barriers to prevent wind erosion.

i think it was   tsar alexander ii

a social contract.

"a social contract is an agreement between citizens and their leader where the citizens give up certain freedoms in exchange for protection. the constitution of the united states is an example of a social contract."

for the 2 countries u can do china and america because america has a democratic government while china has a communist government.

a democracy is a government run by the people either by directly voting or indirectly by electing representatives. an oligarchy is a government run by a few or a small group of people. a democracy and oligarchy are similar because both in an oligarchy and an indirect democracy, a small group of induvial determine the laws for a large group of people they are different because in an oligarchy it is easier to control and they do not have to answer to a large number of people in the country, unlike a democracy where they do have to answer to a large number of people an county that is a democracy would be the united states. a country that is an oligarchy would be the china.