How do borders affect travel and migration?

Borders—particularly national borders—affect travel and migration. People can usually move freely within their own country’s borders, but may not be allowed to cross into a neighboring country. When neighboring countries have similar wealth and political system s, their borders may be open and undefended.

How does the United States protect its borders?

The United States issues “green cards”—officially known as permanent resident cards—that allow non-Americans to live and work inside the borders of the U.S. and be protected by its laws. Most countries have some sort of military or law-enforcement presence along their borders. Countries protect their borders for several reasons.

What countries do not allow people to cross their borders?

In addition to North Korea, nations such as Myanmar and Cuba rarely allow their residents to cross their borders. Borders can also serve to protect resource s. Sometimes, the borders of U.S. congressional district s protect ethnic, religious, or economic communities.

What can the government of a region only do within its borders?

The government of a region can only create and enforce laws within its borders. Borders change over time. Sometimes the people in one region take over another area through violence. Other times, land is trade d or sold peacefully.

What is the world’s most militarized border?

On the opposite extreme, the Korean Demilitarized Zone—the border between communist North Korea and democratic South Korea—is the most heavily militarized border in the world. The zone, which is 4 kilometers (2.5 miles) wide and 243 kilometers (151 miles) long, separates the two countries with barbed-wire fences, land mine s, and armed guards.

Do you have to declare alterations made in a foreign country?

For example, you would declare alterations made in a foreign country to a suit you already owned, and any gifts you acquired outside the United States. American Goods Returned (AGR) do not have to be declared, but you must be prepared to prove to U.S. Customs and Border Protection the articles are AGR or pay Customs duty.