What was an achievement of the Aztecs? A. utilizing a well-developed writing system

B. developing the numeral zero

C. the use of an aqueduct

D. developing the first calendar

What stalled germany's initial invasion into france in 1914

2. what was the significance of the british reform act of 1832? members of the middle class were permitted to run for parliament. members of the working class demanded and received better living conditions. voters were given the right to vote by secret ballot, farm workers, factory workers, and women were given the right to vote.

The soviet union and the united states believed in two very different economic systems. what were the names of each?