What discovery was made by alvin? a. over 4000 new species of marine lifeb. hydrothermal ventsc. the aqualungd. the temperature of different parts of the ocean

 The correct answer is :  b.  hydrothermal vents

Explanation:  A hydrothermal vent is a fissure at the bottom of the sea from which geothermally heated water flows. These vents are generally located near volcanically active places, also in places where tectonic plates are separating. Alvin is a deep immersion vehicle of the Woods Hole Oceanographic Institution.

here are some major conflicts i found. maybe pick one and do more research on it. (cause i ain't writing 6 paragraphs)

in 1877, the nez perce war took place.

1881 - president james garfield was assassinated.

1882 - the chinese exclusion act was passed.

1883 - a decision in the civil rights cases legalized racial segregation in the united states.

1887 - the dawes act was passed.

1893 - the panic of 1893 took place. (what a creative name)

and there are probably other topics you can find if you just search up "united states timeline," or "conflicts in the 19th century for america."

then once you find a topic you like find out how it affected the people of america and what not. (sorry if this feels a bit short changed, history was and never will be one of my strong topics)

yup! you are correct it is b.