Seasonality is affected by what geographical occurrences

Basically you need to ask: how long are the seasons? The seasons rotate on a yearly basis, which corresponds to the Earth's rotation around the Sun - so the major cooccurence is the Earth's rotation around the Sun, combined with the change in the tilt of the Earth's axis. 

This in turn influences the currents and the precipitation, which more directly cause the change of the seasons. 

Seasonality is affected by the temperature in the air, often in conjunction with the time of the year. Worldwide common seasons are winter, spring, summer, and autumn. However, many places also note seasons factoring in precipitation levels, calling them the wet (rainy) season and the dry (not rainy) season.

The investiture controversy began as a power struggle between pope gregory vii (1072–85) and henry iv, holy roman emperor (1056–1106).[2] a brief but significant struggle over investiture also occurred between henry i of england and pope paschal ii in the years 1103 to 1107, and the issue played a minor role in the struggles between church and state in france, as well.by undercutting the imperial power established by the salian emperors, the controversy led to nearly 50 years of civil war in germany, and the triumph of the great dukes and abbots. imperial power was finally re-established under the hohenstaufen dynasty. historian norman cantor:

Even doh you might not think so , you matter and god has planned a life for you so don’t end your life. p.s. god loves you ❤️