Answer:
I think option C is the answer
90 percent
Congressional grants provided the significant of the amount
required for the interstate highway system. This system has profoundly impacted
the American economy and contributed significantly to improved economic productivity.
The system encouraged development by making land less expensive and available
to the nation's transportation system.
A. Life-sustaining would be the answer
Monsoons are one of the most destructive natural phenomena in Asia, but they also limit Africa's trade with the Asian continent, as navigation is severely affected by strong monsoon winds; this affects trade between the two continents, as merchant ships travel from Africa to across the Indian Ocean (which is the monsoon zone), so understanding when and how the winds form will help keep the cargo ships and merchandise, thus increasing trade between Afrika and Asia.
