Answer:
C and D are the answers.
Step-by-step explanation:
In this case, it is necessary to point out that the 12th century was part of The Middle Ages, a period of human history characterized by kingdoms and the influence of the Roman Church in many aspects.
Option C is correct since trade agreements were important and increasing taxes was a way to increase French kings wealthy.
On the other hand, option D is also correct because by acquiring landholdings, the kings could rent them or make them produce money.