Final answer:
The English Civil War was a conflict between the monarchy and Parliament over whether England would be an absolute monarchy. It resulted in the king, Charles I, being beheaded in 1649, marking a significant moment in history.
Step-by-step explanation:
The English Civil War was a struggle between the monarchy and Parliament over whether or not England would be an absolute monarchy. It took place from 1642 to 1649 and pitted the king and his Royalist supporters against Oliver Cromwell and his Parliamentary forces. After years of fighting, the Parliamentary forces gained the upper hand, and in 1649, they charged Charles I with treason and beheaded him. This marked the first time a reigning monarch had been brought before a legislative body and indicted for treason.