The colonists of America had very few opportunities to influence the government of England as they did not have any representation in the British Parliament (which was one of the factors that motivated the Revolutionary War). Because of this, they usually influenced the government through economic measures (ex. by disturbing trade) or through illegal means (ex. rebellions). On the other hand, there are several ways in which people today can influence governments. For example, by writing letters to their representatives, voting in local and federal elections, running for office and lobbying for a cause.
Answer: The most straightforward theory for Western Rome's collapse pins the fall on a string of military losses sustained against outside forces. Rome had tangled with Germanic tribes for centuries, but by the 300s “barbarian” groups like the Goths had encroached beyond the Empire's borders.