相对于其他因素，萨摩、长州两藩的兴起在导致德川幕府倒台一事上有何重要性？试加以探讨。
Examine the importance of the rise of Satsuma and Choshu relative to other factors in leading to the downfall of the Tokugawa Shogunate .
1867年，在长州和萨摩两藩的攻击下，德川幕府倒台。
The shogunate was overthrown by the domains of Satsuma and Chsh in1867 .
长州藩