Why did president william mckinley want to go to war with spain in 1898? a) spain had attacked american forces in hawaii. b) american slaves were receiving weapons from spain. c) war was needed to make the region safe for american business and commerce. d) spain had violated treaties after world war i by building up their navy and army.

B American slaves we’re recovering weapons from spain

Earthworks "merge with their environment".
'Site works' portrays the work required on your building site to set it up for your home to be worked, and also the continuous administration of the building site. 
The earth works refers to the second part of site works which is the work that should be done on the building site to guarantee that your home can be constructed appropriately, that it's worked in the perfect place, and that it will be steady and secure.