Answer: it is because yes
Explanation:
The correct answer is "South Vietnam fell".
Vietnamization was a policy implemented by President Richard Nixon to progresively terminate with the participation of the US in the Vietnam War. The program goals were to equip and train South Vietnam forces so that they would take the leading role in the combats, releasing US troops from those responsibilities.
In the end the program was a failure as it could not prevent the fall of Saigon, the capital of South Vientam, in 1975, and the subsequent unification of North and South Vietnam for the creation of the Socialist Republic of Vietnam.
Shipping waterway is not a human use of wetlands. The correct option among all the options that are given in the question is option "d". Most of the wetlands that are present cannot be used as shipping waterway. Petroleum exploration is also not allowed in wetlands in most of the places due to chance of pollution, but some countries have allowed it.
Answer: Traditional economy
Explanation: a traditional economy is an economic system that relies on habit, custom, or ritual to decide questions of production and consumption of goods and services