According to the articles of confederation, the articles could be amended (changed) only by unanimous vote of all 13 states. this was done because the authors of the articles

a.
wanted to strengthen congress
b.
wanted to create a federal system
c.
opposed state sovereignty
d.
believed in the concept of states' rights

The authors of the articles wanted to strengthen Congress

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.

the tallest building in the western hemisphere and the sixth tallest building in the world