They blockaded along the Eastern seaboard and then the colonists could not receive goods or food to survive.

The state of Maryland is physically situated on North America's Eastern Seaboard.

It is the line where the land and sea meet. The region bordering a sea coast, as in the Eastern seaboard

The English colonies were on the Eastern Seaboard because being on the coast allowed naval trade between Colonial America and England, which made trade much easier and faster. Also, the Eastern Seaboard was and is the closest place to England in North America. Therefore, the Eastern Seaboard hosted the first 13 American states.

On the eastern seaboard near France.