Astronauts and scientists conduct research studies aboard the International Space Station, a satellite that was built by

NASA

Explanation:

it was mainly NASA but others have added to it, hence international.

the best description of the camp david accords is that it was the first time an arab nation had officially recognized the nation of israel.

one of the main reasons was definitely slavery. back in 1861, republican abraham lincoln was elected and ended up being a major influence in the slavery business. slavery greatly affected the texas economy because back in 1845 during the annexation of texas, slaves became a big part of the texas population. many texans that were in favor of the secession influenced groups through party ties.