instruction:
This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.
question:
In early modern times, cardinals often had important roles in secular affairs. In some cases, they took on powerful positions in government. In Henry VIII's England, his chief minister was Cardinal Wolsey. Cardinal Richelieu's power was so great that he was for many years effectively the ruler of France. Richelieu successor was also a cardinal, Jules Mazarin. Guillaume Dubois and Andre-Hercule de Fleury complete the list of the "four great" cardinals to have ruled France.[citation needed] In Portugal, due to a succession crisis, one cardinal, Henry, King of Portugal, was crowned king, the only example of a cardinal-king.
answer:
In what roles did cardinals have important roles?

question:
Transport in the Republic of the Congo includes land, air and water transportation. The country's rail system was built by forced laborers during the 1930s and largely remains in operation. There are also over 1000 km of paved roads and two major international airports (Maya-Maya Airport and Pointe Noire Airport) which have flights to Paris and many African cities. The country also has a large port on the Atlantic Ocean at Pointe-Noire and others along the Congo River at Brazzaville and Impfondo.
answer:
What forms of transport are available in the Congo?

question:
These scholars suggest, from their studies of economic and social data, that early 20th-century child labour in Europe and the United States ended in large part as a result of the economic development of the formal regulated economy, technology development and general prosperity. Child labour laws and ILO conventions came later. Edmonds suggests, even in contemporary times, the incidence of child labour in Vietnam has rapidly reduced following economic reforms and GDP growth. These scholars suggest economic engagement, emphasis on opening quality schools rather than more laws and expanding economically relevant skill development opportunities in the third world. International legal actions, such as trade sanctions increase child labour.
answer:
What caused child labour to decrease in the 20th century?