Answer:
columbian exchange
Explanation:
The Columbian exchange, also known as the Columbian interchange, named for Christopher Columbus, was the widespread transfer of plants, animals, culture, human populations, technology, diseases, and ideas between the Americas, West Africa, and the Old World in the 15th and 16th centuries.
The Crusaders attack the northern part of Jerusalem because it was the closest part of the destination to them, and to achieve 'surprise', it must be quick, and so they couldn't wait out a siege... hope this helps
The main goals of Reconstruction in the South were to reestablish federal control in the South. Another important goal was to facilitate the transition of more than 4 million enslaved people from slavery to freedom. Another goal was to rebuild the infrastructure of the South and restore the seceded states to the Union.
He would probably be proud of the fact that he is the country's first African American president and all the things he's done to help the country
