I have questions (I warn you, a lot of questions) about my History quiz! Best answer gets 10pts.
*What animals were NOT found in the New World before the Europeans came?
A. flying squirrels and catfish
B. bison and opposums
C. sheep and pigs
D. turkeys and rattlesnakes

*The explorer who landed at Newfoundland in 1497 and thus gave England the basis for a claim to North America was:
A. John White
B. John Cabot
C. Arthur Barlowe
D. Sir Humphrey Gilbert

*Bartolome de las Casas:
A. led the first voyage around the world
B. was the first governor of the Spanish territory in the New world
C. gave rise to the "Black Legend" of Spanish cruelty to the Indians
D. urged Spanish conquest of the Indians in order to improve civilization

*The Aztecs were conquered:
A. by Hernando Cortes
B. in the 1520's
C. in part to satisfy the Spanish desire for gold
D. all above statements are true

*The encomiendo system:
A. kept the Portuguese out of Mexico

B. allowed Spanish landowners to control Indian villages
C. benefited the Native American population of Spanish America
D. allowed Mayan and Incan leaders to become very wealthy through the labor of their people

*By the 17th century, the Indian population in Spain's New World empire had decreased by about:
A. 10%
B. 25%
C. 50%
D. 90%

PLEASE HELP ME!