The Treaty said that Belgium was its own country, Belgium would be neutral and the European Powers that signed the Treaty would protect Belgium if is was attacked, It also confirmed the independence of the German speaking part of Luxembourg.
Belgium was essentially founded by the 1839 treaty of London.
The Treaty of London also called the First Treaty of London. It was signed in 1839 just after Belgium Independce was won. The agreements were that Belgium would not help any of the warring nations and the warring nations would not attack Belgium.
The Treaty of London (1839) guaranteed Belgian neutrality. It was signed by Britain, France, Prussia, the Netherlands, Austria and Russia.
The 1839 Treaty of London was an international agreement between several European powers on the one hand, and Belgium on the other. Among the European powers signing the Treaty were Great Britain and Prussia. Germany was a successor state to Prussia; when Germany united into a nation the Prussian kings became the German Emperors, so the Treaty was still binding on Germany. The pertinent article of the 1839 Treaty of London bound all signatories to forever respect and defend the perpetual neutrality of Belgium. So, when the Germans invaded Belgium in 1914 they were not only breaking their solemn promise under the 1839 Treaty to not make war on Belgium, they were ignoring the fact that they had promised to defend Belgium if anyone did attack Belgium. When the British foreign minister reminded the Germans of their obligations under the 1839 Treaty, the German foreign minister scornfully denounced the Treaty as "a scrap of paper". Rather than allow the Germans to cynically do as they pleased as they set about attempting to dominate Europe, the British honored their obligation to defend Belgium under the 1839 Treaty.
A treaty in which Britain promised to defend Belgium if it were ever attcaked.
The British Empire was drawn into the war when Germany declared war on Belgium. According to the Treaty of London of 1839, Belgium was to remain neutral and sovereign at all times.
On 19 April 1839 the Treaty of London signed by the European powers (including the Netherlands) recognized Belgium as an independent and neutral country. Despite it's neutrality, Germany invaded Belgium anyway to surprise the French army who did not expect Germany to cross neutral Belgium. Because of the German invasion Belgium became part of the "Allies" and was not neutral during the rest of the war.
They went to war because when the Great War broke out in August 1914, Russia and France were lined up against Germany and Austria-Hungary. Each of these countries belonged to an alliance that committed them to supporting their alliance partner.=Britain was not committed to joining in the war in 1914, but did so. One of the reasons was the Treaty of London of 1839. This treaty committed Britain to protecting Belgium. But was Britain really protecting Belgium or was Britain protecting itself?=
You don't mention the options you were given, but the formal reason was that Britain was bound by the Treaty of London of 1839, in which it undertook to 'defend' Belgium if it were ever attacked. The British explicitely mentioned this Treaty in their war declaration against Germany.
Luxembourg - Belgium - was created in 1839.
The United Kingdom declared war on Germany on August 4, 1914 after Germany declared war on Belgium. The British had made sure that part of the Treaty of London of 1839, agreed upon by all the major powers in Europe, stipulated that Belgium was to remain neutral and sovereign at all times.
Britain entered the war because of the treaty of London we had with Belgium so if they where attacked we would help them out and Germany went in to Belgium so we joined the war