Four year-old Dimitri agrees that two rows of nickels, equally spaced, contain the same number of nickels. If the spacing increased between the nickels in one row, he thinks that row now has more nickels. Dimitri has NOT acquired the concept of:

a. egocentrism.
b. conservation.
c. centration.
d. object permanence.

Persuaded congress to adopt the missouri compromise in 1820. 1.) henry clay 2.) white southerners 3.) northerners 4.) thomas jefferson

How did shays' rebellion reveal the need for a revision of the articles of confederation? a) shays' rebellion exposed the weakness of the central government as written in the articles of confederation. b) shays' rebellion strengthened the ideas of the anti-federalists in the need for a strong national government. c) shays' rebellion illustrated the need for organized local government factions to handle situations such as this. d) shays' rebellion encouraged others to rebel and eventually led to the overthrow of the first established government in the united states.

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