How will scientific consensus in 2050 apportion the causes of increased life expectancy from 1000AD to 2000AD in Europe?

Prediction market on manifold. Each answer resolves PROB to the percent attributable, based on scientific consensus in 2050. They will sum to 100%. This might be a little subjective so I won't trade on it.

Liquidity: $100,000. Resolves: 1/1/2051.