Similarities between Sam Houston and Mirabeau Lamar are:
Both Sam Houston and Mirabeau Lamar were strong leaders, with visions for the new Republic to shape the future of Texas. They both spent time with bands of Indians in their middle ages and underwent through little schooling
the first all black combat regiment was the 54th Massachusetts Infantry Regiment there's not a definitive answer on who the first African American soldier was.
A Roman’s social and political status was determined solely by Birth.
They were all used in china before being used in Europe.