The use of pools and holding companies benefited which of these groups during the late 19th century and early 20th century?

The use of pools and holding companies benefited the following group during the late 19th and early 20th century:

american troops were forced to withdraw following deadly bombings.

explanation:

the american colonists were happy with their vicorty, but the french were mad and the french and indians were not alies, and neither were the french and colonist. i think,