Complex sentence: The Helsinki Accords of 1975 were an important Cold War-era agreement signed by most European countries, including the Eastern Bloc, the United States and Canada that governed various territorial agreements, frontier disputes, human rights, the threat of force and other items.
Split into simpler sentences: The Helsinki Accords of 1975 were an important Cold War-era agreement signed by most European countries, including those of the Eastern Bloc, the United States and Canada. It governed various territorial agreements, frontier disputes, human rights, the threat of force and other items.