Is money essential to long-distance trade, or does goods for goods (barter) produce more significance results in the
/long run?

No.

Explanation:

Goods for goods (barter) produce more significance results in the  long   distance trade because the traders sold goods and purchase other goods which wanted to sell in his region so there is no significance of money in these long distance trade, the people prefer barter system for them. In ancient times, people sell their items and purchase what they needed with the exchange of items.

they bring people together to achieve control of the government

basically choosinng what sets in   congress and presdicny this is to keepthe antion hole and so it can last because wiht out authority it wouldnt last a week