> Did Britain create the alliance between France and Russia?

Britain did not create the alliance between France and Russia - that alliance was formed independently in 1894 as a counterweight to the Triple Alliance of Germany, Austria-Hungary and Italy. Britain's casus belli for entering WWI in 1914 was Germany's violation of Belgian neutrality, not any direct alliance obligations.

However, I would argue that Britain's shift away from "splendid isolation" and toward the Entente with France and Russia in the early 1900s, while stopping short of hard alliance commitments, still had the effect of emboldening France and Russia in their disputes with Germany and Austria-Hungary. The Anglo-Russian Convention of 1907 in particular eased long-standing tensions between Britain and Russia.

So in that sense, while Britain didn't create the Franco-Russian alliance, British diplomatic moves in the pre-war years did strengthen the Entente bloc and alter the balance of power in a way that made France and Russia less likely to back down in a crisis. A more fervently neutral Britain may have left France and Russia feeling less confident.

> My contention is that if Britain was less neutral and more proactive about creating alliances that could put it in conflict with Germany, they could have successfully deterred the First World War.

In the lead-up to WWI, there was a prevailing belief among European powers that any war would be short. Many did not foresee how devastating and prolonged the conflict would become. So even a more hardline British policy may not have been seen as a strong enough deterrent in 1914.
Additionally, a more assertive Britain risked further inflaming tensions and sparking a crisis. The European alliance system meant any conflict had the potential to spiral out of control - more British alliances could have simply added fuel to the fire. And if war came, Britain would then be obligated to join from the start, rather than having the option to stay out.

> German Empire you seem to idolize was effectively born

I disagree with your characterization that I "idolize" the German Empire. My argument is that the outbreak of World War I was primarily caused by the "Thucydides Trap" dynamic - the dangerous instability that occurs when a rising power threatens to displace an established power. In this case, Germany's rise in the late 19th/early 20th century threatened the European balance of power that had long been anchored by British dominance.

I don't believe in the simplistic "evil Germans started WWI" narrative that was promoted by the war's victors. This narrative served to justify the punitive terms of the Treaty of Versailles placed on Germany, which most historians agree was a key factor in the rise of Nazism and the eventual outbreak of World War II 20 years later.

Portraying it simplistically as "evil Germans" against the noble Allies is not productive and does not do justice to the immense tragedy of the war and its aftermath.

My contention is we should strive to analyze this world-shaping event objectively and resist nation-centric narratives shaped by wartime propaganda. I believe examining it through the lens of great power competition and the "Thucydides Trap" is a more constructive approach.

If you have evidence showing that I "idolize" Imperial Germany, I would appreciate if you could quote where I expressed those sentiments. But I suspect this is a misreading of my arguments about the war's root causes.