In the modern us political system, what is the main system political parties use to nominate candidates?

A. The main system political parties that use to nominate candidates in the modern US political system is the primary system. In a primary the vote is cast by a secret ballot in order to decide the candidate of the party.

b) trade is easy because of the direct line between their major ports. bilateral trade reached 89,6 thousand million.

answer; debriefing;