Answer:
D. People began to specialize in jobs other than hunting or gathering.
Explanation:
Since they had more advanced tools and could farm crops, they didn't have to move around as much and could have other jobs.
The United States is the biggest source of foreign aid. The plans developed are primarily intended for economic development. Other goals are fighting disease, backing up neighboring countries and implementing disaster relief. Although, evaluation of its effectiveness might sometimes be volatile. The measure of its effectiveness could be based on how its purpose was accomplished effectively.
B. Cooperative federalism has been practiced in the US since 1860.
Cooperative federalism, or the concept of federalism in which local, state, and federal governments work together to create policies, replaced dual federalism in the 1930s.
By completing with other nations and expanding boundaries
