China's economy reached big turning points in the 1970s what happened in the 1970s that caused major changes and its economy?

China’s economy increased tremendously because of the decrease in the fertility rate.

Explanation:

When there was a high fertility rate, huge number of the population was made of the young generation. However, because of the turning ratio in the 1970s, the economy shifted significantly.

When looking into further details, the leaders established a long-term plan and used government resource adequately to increase investment as well as achieve more growth. It has also implemented its plans outside the country, and then in the late 1970s the country adopted joint venture laws that governed their patents.

it affected it because the kingdoms (with trade) slowly got richer and richer.

we need the answer choices to answer the question