Answer from cs61c-ax (Amanda Alfonso 15906918) for Question 2
A branch instruction calculates the PC such that PC = Register + Branch address, where the PC is the address of the current instruction (in this case, "beq $t1, $t2, There).  Given this, the beq branch can branch within +/- 2^15 words of the current instruction; however, if "There:" happens to be further away than this, the assembler will have problems.