Complex sentence: At the same time, the government applied greater pressure to enforce the Doukhobors' compliance with the laws and regulations that they found vexatious, such as registering marriages and births, contributing grain to state emergency funds, or swearing oaths of allegiance.
Split into simpler sentences: At the same time, the government applied greater pressure to enforce the Doukhobors' compliance with its laws and regulations. The Doukhobors had resisted registering marriages and births, contributing grain to state emergency funds, and swearing oaths of allegiance.