…. là một trở ngại lớn cho việc xây dựng chủ nghĩa xã hội”: a.
Bệnh ích kỷ.

b.
Bệnh lười biếng.

c.
Bệnh tham lam.

d.
Chủ nghĩa cá nhân.

Good luck : )

Jackson  said nullification 'means insurrection and war,' and called it a treasonous attack on america. the second aspect of the  force bill  was the passing in congress of a lower tariff in 1833. this was offered as a compromise to avoid conflict with south carolina, and to attempt to defuse the tense situation.source google