What ensured a direct line across the american territory for the southern railroad to the pacific? annexation of texas gadsden purchase louisiana purchase mexican cession

In what two ways were the tang and song dynasties of china similar? they jointly built the grand canal. they were economically strong. they had weak military forces. they ruled for about 300 years. they discouraged buddhist ideas.

What is the term for a short statement about history that has not been yet been proved

What made it difficult for mexican americans to win court cases against anglo americans who laid claim to their land