can someone please check my answers

Question

1.)the cossacks were nomadic people who
a.led the russian expansion overseas
b.led the russian expansion eastward toward siberia
c.led the russian political expansion south and west
d.led the russian expansion to the new world
b?
2.)the navigation act of 1651 marked the beginning of england's
a.exploration of the new world
b.conflict with spain over superiority of the seas
c.policing of the seas
d.attempt to control the american colonists
b?
3.)one of the ways the manchus tried to distinguish themselves from the chinese people was by forcing
a.chinese men to wear their hair in a queue
b.chinese girls to have their feet bound
c.all chinese people to accept confucianism
d.all chinese people to wear ceremonial dress
a?
4.)who were britain's allies during the american revolutionary war
a.france
b.spain
c.china
d.britain had no allies
d?
5.)the ottoman empire declined after the reign of suleyman because
a.the empire was too large
b.people lost faith in islam
c.population decreased
d.trade decreased
d?
6.)great britain exported opium to china in exchange for
a.cotton
b.rice
c.linen
d.tea
d?
7.)the significance of the treaty of kanagawa of 1854 was that it
a.ended control of the local daimyos by the tokugawa
b.marked the beginning of greater rights for japanese people
c.closed the ports of japan to foreign trade
d.ended japanese isolation and opened japanese ports to trade
d?

Answer 1

1. b - yes
2. b - or C -- check your written assignment
3. a - I don't know
4. d - yes
5. d - yes
6. d - yes
7. d - yes

7.

Answer 2

thank you ms. sue