I have no idea since I haven't studied the history of Venezuela since 6th grade! But your text plus good searches on Google or Bing should get you the information you need.
http://www.nationsencyclopedia.com/Americas/Venezuela-ECONOMIC-DEVELOPMENT.html
http://en.wikipedia.org/wiki/Economy_of_Venezuela
I agree with you for your second question.
Urbanization:
urban population: 88.9% of total population (2014)
rate of urbanization: 1.54% annual rate of change (2010-15 est.)
The facts above are from http://www.cia.gov/library/publications/the-world-factbook/geos/ve.html
When oil prices fell in the mid-1980s, Venezuela's economy
1. suffered a decline
2. enjoyed an increase
3. stayed about the same***
4. began to show signs of recovery
Most of Venezuela's population lives
1. in cities***
2. in the countryside
3. on islands of floating reeds
4. in the rain forest
Thanks everyone! @Writeacher @Reed @Damon @Ms. Sue
2 answers
suffered a decline