The states shaded in red- california, texas, florida, and new york- have seen strong economic growth since the 1900s. which factor best explain that growth?
a) they avoided any severe natural disasters.
b) they are all known for their warm and sunny weather.
c) they have strong ports and a good transportation network.
d) they have severely restricted who is allowed into their state.

C) They have strong ports and a good transportation network.

Explanation:

California, Texas, Florida and New York had strong ports and good transportation network since 1900 which made them grow economically.

The transportation network is the most important factor for the growth of economy in a country. It is seen as a major source for development of the country. An efficient transportation can reduce the costs in many economic sectors.

The government of the highly developed countries generally focuses on human resources, physical capital, natural resources and technology to increase economic growth.

(C) Enemy nations using sophisticated warfare to overpower the outdated tactics of the empire

Explanation:

Question-Which brought an end to the great West African empires?

answer options

an increase in countries producing their own goods and not needing to trade x

the arrival of Christianity and the decline of Islam x

(enemy nations using sophisticated warfare to overpower the outdated tactics of the empire)

emperors being unable to further the development of technology and learning x

Process of elimination.  

The correct answer is C