I. The thirteen colonies’ struggle for freedom was based on the legacy of the Industrial Revolution. II.The tension between the crown and the colonies rose constantly from 1764 until 1775. III. France and Spain were also involved in the conflict as allies of the British Empire. IV. The colonial militia and later Continental Army, led by George Washington failed to counter the royal threat. V. After the final surrender of the British forces in Yorktown in 1781, Britain accepted the independence of the colonies. Which of these sentences about the birth of the USA are true?