What is probably the most convincing explanation for european expansion?

Answers may vary depending on the timeline but the European expansion was originally done for three main reasons. These reasons are commonly known as the three G’s or gold, glory and God. The Europeans wanted to look for more riches such as gold, spices and other resources. To meet such needs, it was necessary for them to sail across countries. In their travels, they also preached about religion. The word ‘glory’ represents their need for power by colonizing new lands.

it should be c, women were allowed to vote in all states because federal law supersedes state law.

"states can make their own laws, as long as they don't contradict what the federal law states. the states do not have the authority to pass a law that negates a federal law." -google