Chechens are an ethic minority in russia and hav eambitions of nationalism in the past there have been terrorist acts against russia by Chechens (who view the conflict as a civil war). What challenge does this conflict represent? A) Why does violence in Russia never lead to change?

B) How can bordering nations maintain peace?

C) How, or when, should ethnic groups gain independence?

D) How can increased free trade spread ideas?

A. Why does violence in Russia never lead to change?

Explanation:

Some of the most commonly cited violations include deaths in custody, the widespread and systematic use of torture by security forces and prison guards, hazing rituals (known as dedovshchina, meaning "reign of grandfathers") in the Russian Army, widespread violations of children's rights, violence and discrimination .

an angle + its complement = 90 degrees

answer; the correct answer is chemical: