Why did North Korea invade South Korea?

Describe some effects of the rise of communism in the soviet union?

All of the following were weaknesses of the articles of confederation, except: a) the central government was not permitted to regulate state, interstate, or foreign trade. b) the central government was not permitted to borrow money. c) the central government had little ability to regulate money. d) the central government had no ability to tax.

Explain the significance of martin luther king jr's letter from a birmingham jail and i have a dream speech