Answer:
D. Government interference that lowered crop values
The correct answer is D) Compromise.
Congress was constantly trying to find ways to "solve" the issue of slavery in American society. It first started with the Missouri Compromise. This established that the institution of slavery would not exist north of the 36'30 for any new states added during the era of westward expansion. However, this would not last forever as the adding of California after the Mexican-American War became a problem. This is because the 36'30 cut the state into two parts and the US did not want a half free half slave state.
This resulted in the creation of the Compromise of 1850. However, this law would not solve the issue of slavery. Rather, it just pushed the problem further down the road.
The economy you described in your question is called a market economy. It has free markets and the production of goods and services are determined by the consumers.
Monsoons are one of the most destructive natural phenomena in Asia, but they also limit Africa's trade with the Asian continent, as navigation is severely affected by strong monsoon winds; this affects trade between the two continents, as merchant ships travel from Africa to across the Indian Ocean (which is the monsoon zone), so understanding when and how the winds form will help keep the cargo ships and merchandise, thus increasing trade between Afrika and Asia.
The Government in the Sunshine Act is a U.S. law passed in 1976 that affects the operations of the federal government, Congress, federal commissions, and other legally constituted federal bodies.