Which of these mathematical advances occurred under the guptas during the golden age in india? select all that apply. (2points)
a. discovered the ratio of pi
b. devolved the arabic numeral system
c. originated the idea of calculus
d. invented the concept of zero.

Which of the following is an effect that constantine's conversion to christianity had on the roman empire?

How does the existence of a site like catus hill demonstrate the challenge that archaeologist face when making theories?

The political cartoon below was drawn by thomas nast in 1871: a political cartoon shows a heavy set man with a long nose and a beard in a suit and vest. he is smoking a cigar and has a menacing expression. he leans against a large box that says, in counting there is strength. on top of that box is a smaller container labeled, the ballot. dialogue under the cartoon reads, thats whats the matter. boss tweed, as long as i count the votes, what are you going to do about it? say? public domain what issue does this cartoon address?