please check these,my answers are in CAPS

1.Europeans fought the Crusades
a. to establish new trade routes to the Indies
b. to put limitations on European trade
C. TO TAKE CONTROL OF JERUSALEM FROM MUSLIM TURKS
d. to convert Muslims to Christianity
2.Slavery in Africa differed from slavery as it developed in the Americas in that
a. women and children were not enslaved
b. only complete families were enslaved
c. enslavement lasted only seven years
D. SLAVES COULD MOVE UP IN SOCIETY AND OUT OF SLAVERY
3.Which of the following is true of the Columbus legend?
a. he was the only voyager who believed the earth was round
b. he was the first person ever to reach the Americas
c. he was the first European to set foot on American soil
D. HE DEVELOPED A GENIUS FOR NAVIGATION

All of your answers are correct.

A center for the study of navigation, mapmaking, shipbuilding, and sailing was established by

1. The correct answer is C. Europeans fought the Crusades to take control of Jerusalem from the Muslim Turks. To arrive at this answer, you can eliminate options A and B as they are not directly related to the purpose of the Crusades. Option D is also incorrect because the primary goal was not to convert Muslims to Christianity, but rather to gain control of Jerusalem.

2. The correct answer is D. Slavery in Africa differed from slavery as it developed in the Americas in that slaves could move up in society and out of slavery. To arrive at this answer, you can eliminate options A, B, and C as they are all incorrect. Historically, slavery in Africa did not exhibit the same racial and permanent nature as the slavery that developed in the Americas.

3. The correct answer is D. One of the true aspects of the Columbus legend is that he developed a genius for navigation. To arrive at this answer, you can eliminate options A, B, and C as they are all incorrect. Although Columbus was not the only voyager who believed the earth was round, he did play a significant role in proving it. He was not necessarily the first person ever to reach the Americas, as the indigenous people were already living there. Additionally, there were other European explorers who set foot on American soil before Columbus. However, Columbus did demonstrate exceptional skills in navigation.