Britain's armies were trained/professional.
The British had more supplies and men.
And had a more powerful navy than America.
I help this helped! :)
D. Allowing Texas into the Union would upset the balance of slave and free states in Congress. Though it soon became a state since Manifest Destiny was a very popular idea at the time.
He was a brutal leader who advanced the military but made few other positive changes in the Mongol empire.