How did the meltdown of the ice age promote migration within the continent?
a.
it melted the ice in the valleys, thus promoting movement of early immigrants southward and eastward along the continent.
b.
it promoted the growth of plants, and thus early settlers began moving inward to warmer places in search for better land for cultivation.
c.
it promoted the development of fishing for food, thus settlers followed the coastline toward the south and east of the continent.
d.
it melted the frozen land bridge between present-day siberia and north america thus promoting movement inward in the continent.

The correct answer is option:

C. It promoted the development of fishing for food, thus settlers followed the coastline toward the south and east of the continent.

Explanation:

The Ice Age meltdown altered the world's climate. The melting of glaciers allowed early humans to migrate around the world and also brought change in prehistoric nomadic groups ' lifestyle. They became farmers who settled in small groups and grew plants from hunting gatherings.

that would be the steamboat because none of the other things are forms of transportation

john maynard keynes developed new economic theories in response to the : b) great depression of the 1930s. his theories are so important that they are known as "keynesianism". in his works he supports the idea of a government with deeper involvement and intervention to end the great depression.