Iwill give brinliest i doesnt matter its hot a question

What is the most famous discovery attributed to isaac newton ? a) barometer b) thermometer c) laws of universal gravitation d) telescope

Ahistorian who compares the expansion of political systems to the expansion of economic systems is organizing history by o a. region b. culture c. period d. theme

Only 1 vote per state regardless of size why is this a problem