Which did president carter fail to do?
promote détente with communist countries
create a peace agreement between israel and egypt
free americans taken hostage by iran
take action against the soviet invasion of afghanistan

What did President Carter fail to do?

President Jimmy Carter’s failure to get the hostages back ruined his re-election chance in 1980.  We might also note that the taking of the hostages was itself an action aimed at President Carter.  The Iranian Revolution had ousted the shah of Iran, a US-backed leader.  The former shah, Mohammad Reza Pahlavi, living in exile in Mexico, was found to have cancer, President Carter allowed him to come to the United States for treatment.  This enraged the Iranians, who thought that the US was perhaps trying to bring the shah back to power.  That's when the hostages were taken.

the answer is: must pay taxes on profits

since it is considered as a part of your income, profits from investments is eligible for tax payment.

the tax from your investment could be influenced by how long you decided to sell it. united states promotes keeping your investment for long term period. so, the tax rate for investments that you sell in less than one year is typically higher compared to investments that you sell in more than one year period.