Final answer:
The United States' acquisition of territories was supported by the argument that American industries needed raw materials and new overseas markets for their growth and expansion.
Step-by-step explanation:
One argument used in support of the United States' acquisition of territories was that American industries needed raw materials and new markets found overseas. As the United States was experiencing industrialization and expansion, acquiring territories provided access to resources such as minerals, timber, and agricultural products that were essential for the growth of industries. Additionally, these new territories offered potential markets for American goods, allowing businesses to expand their reach and increase profits.