What is the constituency based on

Population

Explanation:

Constituency is a group of electoral unit who has the power to elect a number of representatives Into government body. Currently, the number of electoral votes that each states have is influenced by the number of population that live in the states (more population will grant the state more electoral votes)

The counting of electoral votes is conducted every 10 years. Within those time period, United States Census Bureau will manually counted the amount of people who live in that area,

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