<span>they opposed it because they feared the revolution would spread</span>
Khaldun <em>was who wrote a book about the history of the world in the 1300's.</em>
<span>b] They were afraid they could not sail home against the winds.
c] They had never sailed so long out of sight of land.</span>
The Mayans met their demise when the Spanish conquered the Mayan with the combination of superior technology and the introduction of foreign diseases. Foreign diseases such as smallpox weakened populations and were thus easier to subdue.
The correct answer is - d. Each answer shown is correct.
The formation of a civilization is a process in which multiple things are included. The basis for it is the agriculture, as it enabled the people to start settling in one place. But in order for it to be classified as a civilization, certain other things have to appear, things that would enable progress, development, higher level of thinking, architecture. The basis for these things to occur are the building of the planned cities, that already showed a level of advancement, as well as the written language, which is the trait that contributed the most to the development of the people, thus becoming a civilization.
