The largest flow of German immigration to America occurred between 1820 and World War I, during which time nearly six million Germans immigrated to the United States. From 1840 to 1880, they were the largest group of immigrants.
The pull factor is something that basically is beneficial to the imagrant. Something that pulls them twords that country.
Actually it will always depend on the commanders and type of battle that will commences. Also it will depend on the economic stature of the country and whether it could outwit the other countries in case of war of attrition. Each of the country has their own strength and weaknesses that can attribute to the victory and defeat of the country. If we would based the performance between the three countries in world war 2 period, Germany can oust the two countries in a fast war based on the army size. If it would be a naval combat based on the choices it would be Great Britain can win due to the advantage but statistics can only forecast and can't be an accurate based on victory like the U-boat campaign of the Germans that damage the prestige of the Royal Navy. If in reserves and manpower the French could muster a large amount of men and has an average size of army and navy that can stand a battle against the other countries stated.
<span>Wartime Diplomacy - AP U.S. History Topic Outlines - Study Notes/ i dont wanna copy and paste so just google that </span>
