Explanation:

- Lack of Double Coincidence: In a barter system, both parties need to want what the other offers. Finding someone who both needs and offers the desired goods is tough.

- Difficulty of Division of the Goods: Dividing certain goods into smaller units can be impractical. For example, splitting a cow for smaller trades isn't viable.

- Lack of General Acceptable Measure of Value: Without money, it's hard to agree on what each item is worth compared to others.

- All the above: The barter system suffers from all the issues mentioned.