Hello, the answer is A. Metallic
It was used to power trains and steamboats.
It was used to run many factories in the 1820s.
It was used to help dig canals and build railroads.
I checked because i just did this test and it was b, it was used to poer trains and steamboats!! :)
Answer: Bureau agents were supposed to establish schools, provide aids to poor and aged settle disputes between whites and blacks and among the freed people and secure for former slaves and white unionists equal treatment before the courts
Explanation: