What military resource is involved in many of the public works related to the nation's waterways and coastal areas including dams, levees, and waterway dredging?

The United States Army Corps of Engineers

Explanation:

The United States Army Corps of Engineers (USACE) is a dual nature organization which is responsible for civil works as well as for military projects as well. The USACE will be the primary resource involved in public works related to the nation's waterways and coastal areas including dams, levees, and waterway dredging. This is because they are responsible for the protection of regions from flood and is also responsible for beach nourishment. Also, they are directly responsible for responding to any emergency situation related to flood protection and constructed assets.

european feudalism was a combination of legal and military customs in medieval europe that flourished between the 9th and 15th centuries. broadly defined, it was a way of structuring society around relationships derived from the holding of land in exchange for service or labour.

japanese feudalism. the era of feudalism in japan took place from the 12th through 19th centuries. during that period local rulers, either powerful families or military warlords, dominated the land, while the emperor was merely a figurehead and not a significant political presence.