I Believe The Answer Is:
~B. Disease.
<u>Please Correct Me If I'm Wrong</u>
My research shows that the domestication of plants started around 9,000 years ago. Fig trees, variety of wheat and peas in the Near East were first 9,000 years ago. Barley and chickpeas around 8,500 years ago. These were followed by rice in asia 8,000 years ago along with potatoe, beans and squash in Central and South America also around 8,000 years ago.
to create a permanent settlement to allow for equal access to trade
It was because different states had their own dollars, and some places did not accept dollars from every state
It all depends on the definition of the term Modern Era. The word modern comes from Latin word modo, which means right now or just now. It was used for the first time during the Renaissance in Italy to bring attention to the great rediscoveries of sciences, the arts, history and politics of Classical antiquity and the subsequent discoveries and progresses accomplished like the Age of Discovery.
If such definition is used as the basis for this question then the answer is definitely C.The establishment of global empires.
Indeed, since during the previous periods, Empires were limited to their immediate geographic areas. There had been some attempts to explore areas that were located much farther like the Vikings and their travels to Greenland and North America.
However, it was the Europeans: and to some lesser extent the Chinese, that actually discovered (in the literal sense of removing the cover) the Americas for the entirety of the world. The discovery paved the way for the emergence of Global Empires that were completely unprecedented in the history of humanity since they spanned several continents. For instance, the Global Spanish Empire Under Philip II of Spain in the 16th Century that spanned the continents of Europe, the Americas, Africa and Asia.
