Social tensions were similar to ethnic and religious. Immigrants wanted to go westwards and establish new states, and locals wanted to get land and become politicians in new states, which caused problems. For example, Mormons were religiously prosecuted constantly and had to go as far as Utah in the end. Political tensions were party related and slavery related. They grew out of ideas on whether new states should be slave states or not.
Trade in Europe grew by 1100 because feudalism had made Europe safer, and new technology enabled people to produce more goods and food. As a result, Trade resumed.
The answer to the question is false
Answer:
One reason is to simply expand their religion. Another would be to acquire more resources like exotic spices and such. Another being to dominate.
To basically make sure you've made your claim clear, and to re-instate your claim just one last time, and add any examples you've missed.