Lack of incentive - The lack of incentive among the colonists to complete important tasks led to the tasks not getting done. Many settlers were "gentlemanly" - Since most of the settlers considered themselves "gentlemanly", they considered the hard work of a settler "beneath" them and consequently did not get most of the basic things needed to survive done.
Expectations of finding gold - The expectations of finding gold (and mining it) led to people neglecting things such as gathering food, setting up shelter, etc. Location - The location that the settlers chose to settle in at was great for defending against naval incursions but terrible for living conditions. Bad Relations with Natives- The relations with the local Native Americans(which were all mistakenly grouped up into the Powhatan Indians) were not as good as they could be; if they had had a better relationship they could have traded for food and/or shelter which could have led to lower mortality rates
The main way in which the Northwest Ordinance increases sectionalism in the United States was that it offered lots of new territory in which people had to determine where to be free or slave states.
The final fall of the Byzantine Empire was caused by attacks from the Ottomans.
The Byzantine Empire fell, and Islam spread into Eastern Europe. The Byzantine Empire fell in 1453. The main reason of its fall was a significant number of attacks made by the Ottoman Turks. In 1454, Constantinople finally surrendered to them.