It usually they can involves collaboration among criminals, politicians, and police.
Answer in BOLD
Most military people I have known believe the US Air Force is the safest branch to be in from a combat perspective. In the Army and Marines, the enlisted men do the vast majority of fighting, and, therefore, getting killed.
Evolution
is the stage from mokey to man
Canals cut the cost of transporting materials, improved railroads which helped the movement of heavy wagons, railroads linked manufacturing cities with different materials.