50 points answer right now

what was the outcome of the gallipoli campaign?

a. the germans gave up several colonies to the allies.
b. allied troops won control of greece and bulgaria.
c. the allies retreated after losing many soldiers.
d. german troops took control of the mediterranean region.

Which of the following is an example of the pull factor known as economic migration? a. better educational opportunities pulling people towards a new country b. mexican laborers entering the us to work in agricultural jobs c. joining family members that are already in a new country d. crop failures driving people away from their country i am unsure on this question, i was thinking b? but i could be wrong.

Select the correct answer. in what type of immunity will the defenses be triggered and react in the same manner, regardless of the organism invading? a. adaptive b. innate c. primary d. mechanical barrier

What river systems the worlds earliest known civilization develop ?