B ) Historical understanding is built on ancient materials .
Answer:
The Republican Party platform promised not to interfere with slavery in the states but opposed the further extension of slavery into the territories.
In 1865, Lincoln was instrumental in the passage of the Thirteenth Amendment, which made slavery unconstitutional.
Explanation:
A. new trade and economic opportunities
Since OPEC has influence on member countries' economic growth and development. ... Moreover, despite the existing quotas on oil production, the member countries make benefit by oil exporting. OPEC influence and maintain the prices of oil by controlling the volume of oil production and generate revenue.
