Final answer:
The American-owned company that asked the US State Department to intervene in Guatemala's nationalization program was the United Fruit Company.
Step-by-step explanation:
The American-owned company that asked the US State Department to intervene in Guatemala's nationalization program was the United Fruit Company.
The United Fruit Company was an American business with operations in Guatemala.
They opposed the social reforms proposed by the Guatemalan government, particularly the plan to distribute company land to landless peasants.
As a result, the United States ordered the CIA to support a military coup in which President Arbenz was overthrown and the lands were returned to the United Fruit Company.