What is so special about classical civilizations

How did the constitutional convention deal with slavery , one the most divisive issues of the period

Which of the following was used only once, to ratify the 21st amendment (repealing prohibition)? a.three-fourths of both houses of congress. b.three-fourths of the state legislature approved it. c.two-thirds of the state legislature approved it. d.ratifying conventions in three-fourths of the states approve it.

What will not cause political parties to change or develop