Which culture first develop an understanding of the concept zero?

Me < 3 there are multiple ‘3rd party’ political parties in the us. what are the benefits of having 3rd parties? what are the disadvantages of being a member of one? would the u.s. benefit if there were more 3rd parties created, more support for the current ones, or would it be best to get rid of them altogether? why?

Why was the outcome of oswald’s trial for the assassination of president kennedy

What was a major failing of the united states under the articles of confederation?