A.The Roman empire relied on physical features as natural barriers.
Answer:
National level : President
State level : Governor
Local level : Mayor
Explanation:
The leader of the executive branch has the power to enforce the laws that created by the legislative branch.
President has the highest authority in enforcing laws that affected the whole nation (such forming relationships with other countries, Federal tax, etc)
The governor has the highest authority in enforcing the law that affected the state (such as state tax income, legalities of a certain product, etc)
The Mayor has the highest authority in enforcing law that affected the local (such as allocating budgets to build local infrastructures or education curriculum)
The first digitally operated and programmable robot was invented by George Devol in 1954 and was ultimately called the Unimate. This ultimately laid the foundations of the modern robotics industry.
The vice president becomes president
Answer:
The Sailboat
Explanation:
The Sailboat
Sailboats were invented in order to expand Sumerian trade. Wood and papyrus were used to make lightweight sailboats so that it was easy for them to move on water.
