Which of the following contributed to the u. s. failure in vietnam? select all that apply.
a.
the united states did not study vietnamese history or ask enough questions.
b.
china and vietnam had been close allies for centuries.
c.
the vietnamese had expert guerrilla fighters.
d.
the united states overestimated the cost and length of the war.

This is my last question i can how did religious practices of ancient india influence the modern world? a.christianity and islam began in india and are both major world religions. b.hinduism and buddhism began in india and are both major world religions. c.hinduism began in india and developed into more modern indian religious practices. d.buddhism began in india and developed into more modern indian religious practices.