Which culture first developed an understanding of the concept of zero?

Review the following types of government and match the style to it's definition type of dictatorship in which one person has complete control of the government government in which the people elect representatives to make government decisions for them government in which all people directly participate in government decisions government power is shared between a national government and regional (state) governments government has almost complete control; makes most decisions government power is centralized in regional (state) governments and they work together in a loose national government 1. authoritarian government 2. autocracy 3. confederal government 4. direct democracy 5. federal government 6. representative democracy

How was the storming of the bastille important to the french revolutiona) it forced the king to accept the people's demands for justice. b) it marked the official beginning of the french revolution. c) it compelled the government to treat people with respect.d) it exposed the french soldier's lazy attitudes and weak skills.e) it symbolized the constitutional monarchy.

Which is not a claim kennedy made? a. the fact that communist cuba is so close to american soil is one reason we need to accelerate our space program. b. his decision to shift the study of space to one of the highest american priorities was one of his most important decisions as president. c. within these last months at least 45 satellites have circled the earth. (i think it's this one) d. the mariner spacecraft now on its way to venus is the most intricate instrument in the history of space science. i need this answer really quick, so .