The map above most clearly reflects which of these developments of the time period?

a) the movement of peoples caused environmental and linguistic effects.
b) there was continued diffusion of crops and pathogens, including epidemic disease.
c) improved transportation technologies and commercial practices led to an increased volume of trade.
d) cross-cultural exchanges were fostered by the intensification of existing, or the creation of new, networks of trade and communication.

I would say D. Cross-cultural exchanges were fostered by the intensification of existing, or the creation of new, networks of trade and communication.

Explanation:

A. Is wrong because it does not show the movements of peoples, on the map it says trade routes

B. Is wrong because it does not show epidemic disease, on the map it says trade routes

C. I think this is wrong because it shows it before increased volume of trade, the map says post-classical

D. I believe it is this because it is very much cross-cultural and it does show many new networks of trade

native american contribution: the patriots from britain learn how to hunt, fish, and introduce diversity within cultures.

african americans: indirectly introduced the idea of diversity to americans. africans coming to america because of slavery taught white americans that people come from different backgrounds and colors. it also built america's economic stability for a great period of time. 

women: make america what it is today. there are some societies that are in the world currently that do not give women the same right we give women here in the united states. because women have rights here in the united states, other countries' citizens strive to come to america, especially women, since they have equal rights in the united states. this is important because america is seen and desired by many in the world. 

children: children are our future. we learn from our elders and carry out things the same or differently learning from america's history. we continue tradition and change tradition if it is needed. 

i would say it is the roman empire europe after the norman conquest.