Question

Simplify and shorten this text:

The American colonies possessed a vast territory that was challenging for the British forces to conquer and maintain control over. The Americans were deeply familiar with the terrain and utilized it to their advantage. The dense forests, swamps, and vast countryside provided ideal hiding spots and refuge for American militias and guerilla fighters. By utilizing hit-and-run tactics, the Americans wore down the British army, making it increasingly difficult for them to sustain their hold over the colonies. The geography also made it difficult for the British to effectively communicate and supply their troops, as they faced long and vulnerable supply lines.