A few key points to keep in mind about Jainism and history:

• Jainism did not disappear or “fall apart” as a religion. It survived through centuries, though its political and social position changed over time.
• What is often described as a decline refers to a reduction in royal patronage, fewer political power centers, and the destruction or neglect of many Jain temples and institutions in certain periods, especially during medieval invasions and upheavals in North India.
• Major factors that affected Jain communities:

- Shifts in imperial power and royal patronage. When traditional rulers who supported Jain temples and monastic orders weakened or changed faiths, local Jain institutions suffered. - Invasions and religious conflicts in medieval India (roughly 10th–16th centuries) led to the damage of temples, loss of urban centers where Jains lived and worked, and disruption of monastic networks. - Rising Hindu bhakti movements and changing religious landscapes altered local support structures in some regions.

• Regions and resilience:

- Jain communities remained strong in western India (Gujarat, parts of Rajasthan and Malwa) and in parts of southern India (Maharashtra, Karnataka, parts of Tamil Nadu). - The Digambara and Śvetāmbara communities maintained their own sanghs (monastic ordination lines, temples, and literature), helping Jainism endure despite regional challenges.

• Two broad traditions (Digambara and Śvetāmbara) have differing historical narratives and emphasis about events, but both describe periods of difficulty and renewal, and both stress the continuity of the Jain path through dedicated monks, nuns, and lay followers.
• Modern picture:

- Today Jain communities are relatively small but organized, with temples, education, and charitable activities in many Indian cities and abroad. The core ethical and spiritual teachings—ahimsa (non-violence), anekantavada (many-sided truth), and aparigraha (non-attachment)—have continued to inspire adherents.

If you’d like, I can give a concise timeline with concrete dates and events (e.g., specific invasions, temple destructions, and revival periods) to show how Jain institutions rose, faced pressures, and renew ed themselves across different regions.