Which of the Following Was an Important Change in Trading

Which of the following was an important change in trading practices during the first millennium B.C.E.?

A) Rulers began to sponsor merchants personally, providing them with the funds to travel farther and obtain a greater variety of goods.
B) Traders experienced a period of sharp decline during the Sea People invasions.
C) Merchants began to trade privately and served a greater population of potential customers.
D) Merchants became the rulers of several important city states and amassed great wealth.