Which branch of the u. s. armed forces is composed of land combat and service forces, which includes aviation, water transport, and space and cyberspace forces?

The branch of the U.S. Armed Forces that is composed of land combat and service forces, which includes aviation, water transport, and space and cyberspace forces is the Army of the United States.

Explanation:

The United States Army is the part of the American armed forces that is primarily responsible for land warfare.

At the end of the 2018 tax year, the US military had 475,500 soldiers in active service. There were also 540,000 reservists.

i would say it is the roman empire europe after the norman conquest.