Political parties first to nominate presidential candidates.? ( will award best answer)
6. political parties first to nominate presidential candidates.
a. held national conventions
b. held popular elections
c. used congressional caucuses
d. asked political party contributors
8. the selection of delegates to the national convention produces
a.

6. I believe the answer is: C. used congressional caucuses

Congressional caucuses refer to a group of congress who held the same objective to pass a type of legislation that would benefit them in some ways. They do not necessarily belonged in a same party, and they often trade favours in order to provide each others with votes during the creation of legislation.

8. I believe the answer is: Political parties

In united states, the National Conventions is being held in order to appoint the cnadidates that are going to be running for the presidential position. In the convention, each parties would nominate their own appointee which usually have similar belief with the parties.

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer

well this isn't a question but if you are asking if it is true or false it is, true.