How did the maya contribute to the field of mathematics?
a. they founded new mathematical branches such as geometry and trigonometry.
b. they were one of two civilizations to independently devise the concept of zero.
c. they discovered the idea of pi, which is widely used in present-day mathematics.
d. they discovered mathematical tools such as the ruler, compass, and calculator.

The collapse of the roman empire most likely to empower the catholic church because

Which of the following sets best matches the document to the people and/or ideas that influenced it? a. constitution: federalists, thomas jefferson, patrick henry b. bill of rights: george mason, thomas jefferson, james madison c. federalist papers: federalists, george washington, james madison d. letters from the federal farmer: federalists, richard henry lee, alexander hamilton select the best answer from the choices provided

Interest groups representing businesses and investors are often among the most successful lobbying groups for all of the following reasons, except a. such groups have the financial resources to mount sustained campaigns on their own behalf b. these groups' members contribute heavily to many legislators' campaigns and in so doing gain greater access to legislators c. these groups have often been in existence for decades, allowing them to both master the legislative system and develop close ties with legislators d. the members of these groups make up the majority of voters in many districts